- Mailman-users - lists.mailman3.org

Installation guide
by Loring 31 Jul '17

31 Jul '17

So I am looking to install the latest mailman 3, however I can find no complete guide as to how to install it. I have found some pages for instance http://mailman.readthedocs.io/en/latest/src/mailman/docs/install.html# This however gives me no instructions on how to install mailman3.x, can anyone point me in the righ direction please. -- Richmond Loring rloring(a)bnl.gov Advanced Systems Engineer

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MM3 statistics
by Tom Browder 28 Jul '17

28 Jul '17

Are there any plugins or programs for mm3 statistics? Thanks. -Tom

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Mailman 3 Status Update Please?
by ddw David Wilson 26 Jul '17

26 Jul '17

Mailman 3 Status Update Please I have been following the progress and difficulties with great interest as many struggle to implement the new version of the great Mailman 3 list-server software. Last year about this time I posed some questions regarding the current development status and recognize that many additional problems seem to get in the way of actually working on long term big picture issues. From my perspective of being an senior (ie overaged) person desirous of implementing fully-featured, capable, scalable, reliable, secure applications such as Mailman, I am convinced that I am thoroughly over my head. From my limited perspective, it would seem to me that a 'nice to have' system would incorporate the following. 1. An open container standard configurable system install, compatible with different web & mail servers, DB utilities, etc; 2. Python 3 version Django utilities for archiving and mail list name management; 3. A design/plan from an inside expert perspective stating costs, time and resources to implement the plan, incorporating crowdfunding to pay for project. 4. As a backup incentive to the crowdfunding plan might be the offer of an expert to set up a system for each significant amount donated, say US$1,000, such as might be accomplished by an SSL session on the target computer/server after the user has specified all necessary detail as required in a template. I am sure that the program author and other major contributors could greatly enhance this list. In summary, I guess what I am requesting is an overview forecast by half year period and out for the next two years? Please share the big picture? Thank you in advance and best regards. Dave Wilson

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MM3.1 templates
by Matt Richards 20 Jul '17

20 Jul '17

I've managed, to setup MM3.1 using the docker images from http://github.com/maxking/docker-mailman. I would like to start customizing the templates MM3.1 uses for the footer and confirmation emails. Is there any mailman site admin or list admin documentation on how to customize email templates in MM3.1? I've found this template doc at https://gitlab.com/mailman/mailman/tree/master/src/mailman/rest/docs, but I'm not clear how this works.. and it appears postorius doesn't have template support yet? I am new to python and django.. -- --Matt

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AH01102: error reading status line from remote server 172.19.199.3:8000
by Henrik Rasmussen 20 Jul '17

20 Jul '17

I've just installed Mailman 3.1 on RHEL7 (Docker-Mailman3) and to get the right CSS layout I installed Apache on the Mailman server outside Docker, as advised by Abhilash Raj and Alexander Klotz. My Mailman server is on a secured network and the https connection from Internet will be handled by proxy servers, so I will be using http (port 80) between proxy-servers and Mailman server. But when I sign in (currently via an SSH tunnel to the Mailman server from my workstation) I get "Internal error: [client ::1:41912] AH01102: error reading status line from remote server 172.19.199.3:8000, referer: http://localhost/accounts/login/?next=%2Fpostorius%2Flists%2F" If I type a wrong password, I am just warned about that, so the problem appears when log in is accepted. I expect that it is because I connect to localhost:80 through SSH tunnel. What do I miss in my Apache configuration on the Mailman server to avoid this problem? <VirtualHost *:80> ErrorLog /var/log/httpd/error_log LogLevel warn CustomLog /var/log/httpd/access_log combined ServerAdmin root(a)example.foo ServerName list.foo.bar Alias /static /opt/mailman/web/static Alias /favicon.ico /opt/mailman/web/static/hyperkitty/img/favicon.ico ProxyPassMatch ^/static/.* ! ProxyPass / http://172.19.199.3:8000/ ProxyPassReverse / http://172.19.199.3:8000/ <Directory /> Allow from all Require all granted </Directory> <Directory /opt/mailman/web/static/hyperkitty/img/> Allow from all Require all granted </Directory> # ssl config here ... </VirtualHost> Thanks, Henrik Rasmussen

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List of "site admin" commands in Mailman 3.1 docker-mailman
by Henrik Rasmussen 18 Jul '17

18 Jul '17

I am new to all of Python, Django, Docker, Docker-compose and everything else used by docker-mailman. I have managed to get a webinterface of Mailman 3.1, I installed using Docker and Docker-Compose from github.com/maxking/docker-mailman, but my config is still bogues (probably just my Apache-config). I'm quite confused about Mailman 3 documentation regarding those commands the site admin would do in Mailman 2 like list_members, config_list -o etc.)., and I have been trying to figure out what documentation regards the development of Mailman 3, what regards the final version 3.1 and what I am supposed to do regarding Docker. 1) Should I enter the container using "docker exec -it mailman-web bash" and run "python" in order to get a python prompt, and from there run commands like those documented at mailman.readthedocs.io/en/latest/src/mailman/commands/docs/control.html ?. 2) Where do I define the what was previously known as the site admin user and site admin e-mail? On another note: Is it a setting in the mailman-users(a)mailman3.org list setup that make each of my postings to the list come back with the note "This sender failed our fraud detection checks and may not be who they appear to be."? Thanks Henrik Rasmussen

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Re: Found error in docker-container
by Abhilash Raj 17 Jul '17

17 Jul '17

Hi Alex, On Wed, Jul 5, 2017, at 03:21 AM, Alexander Klotz wrote: > Hi, > > one of our developers wanted to point out an error he found in mailman > 3.1, docker container maxking/mailman-core-0.1 > > The entries in /opt/mailman/core/var/data/postfix_lmtp are not set > correctly, example: > > /^testlist(a)mailman\.example\.com$/ lmtp:[172.19.199.2# IP > Address of mailman-core container]:8024 > > this actually should look like this: > > /^testlist(a)mailman\.example\.com$/ lmtp:[172.19.199.2]:8024 Can you send a copy of your Mailman configuration that you added at `/opt/mailman/core/mailman-extra.cfg`? I think this is mostly because the configuration parser doesn't understand the in-line comments. So, if you are using the configuration exactly as it is mentioned in the documentation, it could be the cause of this problem. Solution to that would be to just remove all the in-line comments. [mta] incoming: mailman.mta.postfix.LMTP outgoing: mailman.mta.deliver.deliver lmtp_host: 172.19.199.2 # IP Address of mailman-core container lmtp_port: 8024 smtp_host: 172.19.199.1 # IP Address of host where postfix is. smtp_port: 25 configuration: /etc/postfix-mailman.cfg Like the two comments seen in the configuration above. I will update the documentation too so that others don't get caught in something like this. Thanks! -- thanks, Abhilash Raj

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postfix, dovecot and MM3
by Matt Richards 15 Jul '17

15 Jul '17

This is a bit of a lengthy post, but I wanted to make sure I had enough detail to document the problem I'm experiencing. The quick summary is, I'm having a problem with postfix, dovecot and mailman3.. routing Problem: Postfix mail routing is mostly working correctly with the execpetion of handling test-confirm+157fcaf78907a2bbf21b36aaf349386e09e801a8(a)example.com emails. As you can see below in my postfix config, I have defined recipient_delimiter.. I'm not sure what else is going wrong.. For example, if I email test-confirm(a)example.com, the mail will route over to MM correctly as postfix is able to find this exact email address in the postfix_lmtp transport file. However, if I reply to a mm confirmaion email, test-confirm+157fcaf78907a2bbf21b36aaf349386e09e801a8(a)example.com, postfix will fail to deliver the email correctly due postfix trying to lookup the test-confirm(a)example.com in dovcot's virtual mailbox tables. I hope this is enough information... My research seems to indicate I might need to change something with virtual_alias_maps, however from my testing, changing this setting to include MM3's geneated postfix_lmtp file, it'll cause more problems.. I've also considered using a sub-domain, for example lists.example.com instead of my primary domain for mm3, this may fix a lot of my issues. Setup overview: Integrated mailcow-dockerized (https://github.com/andryyy/mailcow-dockerized) & docker-mailman (https://github.com/maxking/docker-mailman) - all I have done is merged the containers from the docker-mailman docker-compose.yml into mailcow's docker-compose.yml - updated the network settings for docker-mailman to use mailcow's internal network if needed, I can provide my docker-compose file. mx1.example.com = An internal eMail firewall and security server Below is the reject log from postfix: Jul 15 18:11:22 mx10 postfix/smtpd[418]: NOQUEUE: reject: RCPT from mx1.example.com[xxx.xxx.xxx.xxxx]: 550 5.1.1 < test-confirm+157fcaf78907a2bbf21b36aaf349386e09e801a8(a)example.com>: Recipient address rejected: User unknown in virtual mailbox table; from=< xxxx(a)gmail.com> to=< test-confirm+157fcaf78907a2bbf21b36aaf349386e09e801a8(a)example.com> proto=ESMTP helo=<mx1.example.com> Below is my postfix configs: ##Postfix main.cnf biff = no append_dot_mydomain = no smtpd_tls_cert_file = /etc/ssl/mail/cert.pem smtpd_tls_key_file = /etc/ssl/mail/key.pem smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases relayhost = [mx1.example.com]:25 mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 [fd4d:6169:6c63:6f77::]/64 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all inet_protocols = all bounce_queue_lifetime = 1d broken_sasl_auth_clients = yes disable_vrfy_command = yes maximal_backoff_time = 1800s maximal_queue_lifetime = 1d message_size_limit = 26214400 milter_default_action = accept milter_protocol = 6 minimal_backoff_time = 300s plaintext_reject_code = 550 postscreen_access_list = permit_mynetworks, cidr:/opt/postfix/conf/postscreen_access.cidr, tcp:127.0.0.1:10027 postscreen_bare_newline_enable = no postscreen_blacklist_action = drop postscreen_cache_cleanup_interval = 24h postscreen_cache_map = proxy:btree:$data_directory/postscreen_cache postscreen_dnsbl_action = enforce postscreen_dnsbl_sites = b.barracudacentral.org=127.0.0.2*7 dnsbl.inps.de=127.0.0.2*7 bl.mailspike.net=127.0.0.2*5 bl.mailspike.net=127.0.0.[10;11;12]*4 dnsbl.sorbs.net=127.0.0.10*8 dnsbl.sorbs.net=127.0.0.5*6 dnsbl.sorbs.net=127.0.0.7*3 dnsbl.sorbs.net=127.0.0.8*2 dnsbl.sorbs.net=127.0.0.6*2 dnsbl.sorbs.net=127.0.0.9*2 zen.spamhaus.org=127.0.0.[10;11]*8 zen.spamhaus.org=127.0.0.[4..7]*6 zen.spamhaus.org=127.0.0.3*4 zen.spamhaus.org=127.0.0.2*3 hostkarma.junkemailfilter.com=127.0.0.2*3 hostkarma.junkemailfilter.com=127.0.0.4*1 hostkarma.junkemailfilter.com=127.0.1.2*1 wl.mailspike.net=127.0.0.[18;19;20]*-2 hostkarma.junkemailfilter.com=127.0.0.1*-2 postscreen_dnsbl_threshold = 8 postscreen_dnsbl_ttl = 5m postscreen_greet_action = enforce postscreen_greet_banner = $smtpd_banner postscreen_greet_ttl = 2d postscreen_greet_wait = 3s postscreen_non_smtp_command_enable = no postscreen_pipelining_enable = no proxy_read_maps = proxy:mysql:/opt/postfix/conf/sql/ mysql_virtual_sender_acl.cf, proxy:mysql:/opt/postfix/conf/sql/ mysql_tls_enforce_out_policy.cf, proxy:mysql:/opt/postfix/conf/sql/ mysql_tls_enforce_in_policy.cf, $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps queue_run_delay = 300s relay_domains = proxy:mysql:/opt/postfix/conf/sql/ mysql_virtual_relay_domain_maps.cf relay_recipient_maps = proxy:mysql:/opt/postfix/conf/sql/ mysql_relay_recipient_maps.cf sender_dependent_default_transport_maps = proxy:mysql:/opt/postfix/conf/sql/ mysql_tls_enforce_out_policy.cf smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt smtp_tls_cert_file = /etc/ssl/mail/cert.pem smtp_tls_key_file = /etc/ssl/mail/key.pem smtp_tls_loglevel = 1 smtp_dns_support_level = dnssec smtp_tls_security_level = dane smtpd_data_restrictions = reject_unauth_pipelining, permit smtpd_delay_reject = yes smtpd_error_sleep_time = 10s smtpd_hard_error_limit = ${stress?1}${stress:5} smtpd_helo_required = yes smtpd_proxy_timeout = 600s smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, check_recipient_access proxy:mysql:/opt/postfix/conf/sql/ mysql_tls_enforce_in_policy.cf, reject_invalid_helo_hostname, reject_unknown_reverse_client_hostname, reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes smtpd_sasl_path = inet:dovecot:10001 smtpd_sasl_type = dovecot smtpd_sender_login_maps = proxy:mysql:/opt/postfix/conf/sql/ mysql_virtual_sender_acl.cf smtpd_sender_restrictions = reject_authenticated_sender_login_mismatch, permit_mynetworks, reject_sender_login_mismatch, permit_sasl_authenticated, reject_unlisted_sender, reject_unknown_sender_domain smtpd_soft_error_limit = 3 smtpd_tls_auth_only = yes smtpd_tls_dh1024_param_file = /etc/ssl/mail/dhparams.pem smtpd_tls_eecdh_grade = strong smtpd_tls_exclude_ciphers = ECDHE-RSA-RC4-SHA, RC4, aNULL smtpd_tls_loglevel = 1 smtp_tls_mandatory_protocols = !SSLv2, !SSLv3 smtp_tls_protocols = !SSLv2, !SSLv3 lmtp_tls_mandatory_protocols = !SSLv2, !SSLv3 lmtp_tls_protocols = !SSLv2, !SSLv3 smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3 smtpd_tls_protocols = !SSLv2, !SSLv3 smtpd_tls_mandatory_ciphers = high smtpd_tls_security_level = may tls_ssl_options = NO_COMPRESSION tls_high_cipherlist = EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA256:EECDH:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!IDEA:!ECDSA:kEDH:CAMELLIA128-SHA:AES128-SHA transport_maps = regexp:/opt/mailman/core/var/data/postfix_lmtp local_recipient_maps = regexp:/opt/mailman/core/var/data/postfix_lmtp proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_mailbox_maps.cf virtual_alias_maps = proxy:mysql:/opt/postfix/conf/sql/ mysql_virtual_alias_maps.cf, proxy:mysql:/opt/postfix/conf/sql/ mysql_virtual_spamalias_maps.cf, proxy:mysql:/opt/postfix/conf/sql/ mysql_virtual_alias_domain_maps.cf, proxy:mysql:/opt/postfix/conf/sql/ mysql_virtual_alias_domain_catchall_maps.cf virtual_gid_maps = static:5000 virtual_mailbox_base = /var/vmail/ virtual_mailbox_domains = proxy:mysql:/opt/postfix/conf/sql/ mysql_virtual_domains_maps.cf virtual_mailbox_maps = regexp:/opt/mailman/core/var/data/postfix_lmtp proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_mailbox_maps.cf virtual_minimum_uid = 104 virtual_transport = lmtp:inet:dovecot:24 virtual_uid_maps = static:5000 smtpd_milters = inet:rspamd:9900 non_smtpd_milters = inet:rspamd:9900 milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen} mydestination = localhost.localdomain, localhost #content_filter=zeyple # Prefere IPv4, useful for v4-only envs smtp_address_preference = ipv4 smtp_header_checks = pcre:/opt/postfix/conf/mailcow_anonymize_headers.pcre unknown_local_recipient_reject_code = 550 owner_request_special = no Note: I've replaced my real domain name with example.com, as I don't wish to have my server information publicly archived for spam and security reasons. I have also masked any external IP addreses. I'm also aware my email setup is a bit more complicated than the usual as I have an email firewall/security server in the mix. I've tried my best to accurately describe what I have configured. If you need any actual logs or configs, please contact me directly off this list for this information. -- --Matt

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Does hyperkitty show JPEGs in line and what about attachments?
by Jason Glazer 13 Jul '17

13 Jul '17

I run several MailMan 2.1 mailing lists and some subscribers are frustrated by the way pipermail deals with JPEGs that are embedded in the messages and also with how attachments are handled. Does hyperkitty in Mailman 3.1 do better on these issues. Assuming this message gets archived, I am going to try embedding a small picture right here: Hopefully that shows up in the archive. I won't add an attachment because the list may not allow it but I'm curious how those are handled. Thanks Jason -- Jason Glazer, P.E., BEMP, GARD Analytics, 90.1 ECB chair, 209 chair Admin for onebuilding.org building performance mailing lists

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Docker Mailman3 installation frustration
by ccsmith＠cetsi.com 13 Jul '17

13 Jul '17

I've been working on installing Mailman3 for several weeks now, with limited success. I have tried various installation methods following instructions on numerous different web pages. My experience has been that the instructions are often conflicting and never complete. My best success has been with the Docker version, so that's what I'm going to concentrate on here. I'm running Ubuntu 16.04 (under Citrix XenServer), with Apache httpd and postfix. Following the instructions on https://asynchronous.in/docker-mailman/, I did the following: * created the directories "/opt/mailman/core" and "/opt/mailman/web", * created "/opt/mailman/core/mailman-extra.cfg" and inserted the suggested [mta] directives, * inserted the "transport_maps", "local-recipient_maps", and "relay_domains" entries in the /etc/postfix/main.cf file, * created the necessary apache config files, * cloned "https://github.com/maxking/docker-mailman", * ran "docker-compose up -d" At this point, I am able to connect with Postorius. All of the text and icons show up properly; all is well. It tells me (correctly) that "There are currently no mailing lists." When I click on the "Login" link at the top right, the "Sign In" page displays correctly. (Aside: Why do so many apps/sites have difficulty with choosing between "login" and "sign in" and, in fact, use both terms? It can really be off-putting to non-tech users... and me.) If I input an incorrect login, I receive (correctly) the message "The username and/or password you specified are not correct." However, if I input the correct sign-in, I receive: "Server Error (500)". Running "sudo docker exec -it mailman-web cat ../mailman-web-data/logs/mailmanweb.log" shows me: ERROR 2017-07-12 20:34:25,073 25 django.request Internal Server Error: /accounts/login/ Traceback (most recent call last): File "/usr/local/lib/python2.7/site-packages/django/core/handlers/exception.py", line 39, in inner response = get_response(request) ... more stuff ... File "/usr/local/lib/python2.7/smtplib.py", line 747, in sendmail raise SMTPRecipientsRefused(senderrs) SMTPRecipientsRefused: {u'pacetechadmin(a)cetsi.com': (451, '4.3.0 <pacetechadmin(a)cetsi.com>: Temporary lookup failure')} On the Docker host (ubuntuServer2), /var/log/mail.log shows: Jul 12 13:48:53 ubuntuServer2 postfix/smtpd[19931]: error: open /opt/mailman/core/var/data/postfix_domains: No such file or directory Jul 12 13:48:53 ubuntuServer2 postfix/smtpd[19931]: error: open /opt/mailman/core/var/data/postfix_lmtp: No such file or directory Jul 12 13:48:53 ubuntuServer2 postfix/smtpd[19931]: connect from unknown[172.19.199.3] Jul 12 13:48:53 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: regexp:/opt/mailman/core/var/data/postfix_domains is unavailable. open /opt/mailman/core/var/data/postfix_domains: No such file or directory Jul 12 13:48:53 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: relay_domains: regexp:/opt/mailman/core/var/data/postfix_domains: table lookup problem Jul 12 13:48:53 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: relay_domains lookup failure Jul 12 13:48:53 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: regexp:/opt/mailman/core/var/data/postfix_domains is unavailable. open /opt/mailman/core/var/data/postfix_domains: No such file or directory Jul 12 13:48:53 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: relay_domains: regexp:/opt/mailman/core/var/data/postfix_domains: table lookup problem Jul 12 13:48:53 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: relay_domains lookup failure Jul 12 13:48:53 ubuntuServer2 postfix/smtpd[19931]: NOQUEUE: reject: RCPT from unknown[172.19.199.3]: 451 4.3.0 <pacetechadmin(a)cetsi.com>: Temporary lookup failure; from=<postorius(a)localhost.local> to=<pacetechadmin(a)cetsi.com> proto=ESMTP helo=<mailman-web> Jul 12 13:48:54 ubuntuServer2 postfix/smtpd[19932]: error: open /opt/mailman/core/var/data/postfix_domains: No such file or directory Jul 12 13:48:54 ubuntuServer2 postfix/smtpd[19932]: error: open /opt/mailman/core/var/data/postfix_lmtp: No such file or directory Jul 12 13:48:54 ubuntuServer2 postfix/smtpd[19932]: connect from unknown[172.19.199.3] Jul 12 13:48:54 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: regexp:/opt/mailman/core/var/data/postfix_domains is unavailable. open /opt/mailman/core/var/data/postfix_domains: No such file or directory Jul 12 13:48:54 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: relay_domains: regexp:/opt/mailman/core/var/data/postfix_domains: table lookup problem Jul 12 13:48:54 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: relay_domains lookup failure Jul 12 13:48:54 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: regexp:/opt/mailman/core/var/data/postfix_lmtp is unavailable. open /opt/mailman/core/var/data/postfix_lmtp: No such file or directory Jul 12 13:48:54 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: regexp:/opt/mailman/core/var/data/postfix_lmtp lookup error for "root@localhost" Jul 12 13:48:54 ubuntuServer2 postfix/trivial-rewrite[19843]: warning: transport_maps lookup failure Jul 12 13:48:54 ubuntuServer2 postfix/smtpd[19932]: NOQUEUE: reject: RCPT from unknown[172.19.199.3]: 451 4.3.0 <root@localhost>: Temporary lookup failure; from=<root(a)localhost.local> to=<root@localhost> proto=ESMTP helo=<mailman-web> Jul 12 13:48:54 ubuntuServer2 postfix/smtpd[19932]: disconnect from unknown[172.19.199.3] ehlo=1 mail=1 rcpt=0/1 rset=1 quit=1 commands=4/5 Jul 12 13:48:54 ubuntuServer2 postfix/smtpd[19931]: lost connection after RSET from unknown[172.19.199.3] Jul 12 13:48:54 ubuntuServer2 postfix/smtpd[19931]: disconnect from unknown[172.19.199.3] ehlo=1 mail=1 rcpt=0/1 rset=1 commands=3/4 And /var/log/mail.err is filling up with: Jul 12 13:48:53 ubuntuServer2 postfix/smtpd[19931]: error: open /opt/mailman/core/var/data/postfix_domains: No such file or directory Jul 12 13:48:53 ubuntuServer2 postfix/smtpd[19931]: error: open /opt/mailman/core/var/data/postfix_lmtp: No such file or directory Jul 12 13:48:54 ubuntuServer2 postfix/smtpd[19932]: error: open /opt/mailman/core/var/data/postfix_domains: No such file or directory Jul 12 13:48:54 ubuntuServer2 postfix/smtpd[19932]: error: open /opt/mailman/core/var/data/postfix_lmtp: No such file or directory Any thoughts on what the problem is? Have I missed a step?

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