Hi guys -- I'm a little baffled here... I'd got my Mailman instance running, then went on leave, and then tried to use it. No dice.

If I subscribed an address, no confirmation email would come through. Checked the Postfix log and see this: Roger Hislop (IS) Executive Head - IOT T +27 11 5751600 M+27 78 4595952

May 16 14:34:50 ip-172-31-23-250 postfix/smtp[5025]: 15B87A35FB: to=<iotic-za@reasondigital.co.za>, relay=email-smtp.eu-west-1.amazonaws.com[52.51.155.83]:587, delay=0.22, delays=0.01/0.02/0.1/0.1, dsn=5.0.0, status=bounced (host email-smtp.eu-west-1.amazonaws.com[52.51.155.83] said: 554 Message rejected: Email address is not verified. The following identities failed the check in region EU-WEST-1: test-list-request@iotcouncil.org.za, test-list-bounces@iotcouncil.org.za (in reply to end of DATA command))

I've verified the domain listman.iotcouncil.org.za, so it would seem the obvious solution is to change the domain the mails come from.

It appeared that I just change the postfix config to specify domain list so:

# INTERNET HOST AND DOMAIN NAMES # # The myhostname parameter specifies the internet hostname of this # mail system. The default is to use the fully-qualified domain name # from gethostname(). $myhostname is used as a default value for many # other configuration parameters. # myhostname = listman.iotcouncil.org.za <<< HERE #myhostname = virtual.domain.tld

# The mydomain parameter specifies the local internet domain name. # The default is to use $myhostname minus the first component. # $mydomain is used as a default value for many other configuration # parameters. # mydomain = listman.iotcouncil.org.za <<< and HERE

# SENDING MAIL # # The myorigin parameter specifies the domain that locally-posted # mail appears to come from. The default is to append $myhostname, # which is fine for small sites. If you run a domain with multiple # machines, you should (1) change this to $mydomain and (2) set up # a domain-wide alias database that aliases each user to # user@that.users.mailhost. # # For the sake of consistency between sender and recipient addresses, # myorigin also specifies the default domain name that is appended # to recipient addresses that have no @domain part. # myorigin = listman.iotcouncil.org.za <<< and HERE #myorigin = $mydomain

But when I look in the log: May 16 15:13:05 ip-172-31-23-250 postfix/qmgr[5700]: D58F9A35FB: from=<test-list-bounces@iotcouncil.org.za>, size=1224, nrcpt=1 (queue active) May 16 15:13:05 ip-172-31-23-250 postfix/smtpd[5710]: disconnect from ip-172-19-199-2.eu-west-1.compute.internal[172.19.199.2] May 16 15:13:06 ip-172-31-23-250 postfix/smtp[5713]: D58F9A35FB: to=<iotic-za@reasondigital.co.za>, relay=email-smtp.eu-west-1.amazonaws.com[52.51.155.83]:587, delay=0.25, delays=0.01/0.03/0.1/0.12, dsn=5.0.0, status=bounced (host email-smtp.eu-west-1.amazonaws.com[52.51.155.83] said: 554 Message rejected: Email address is not verified. The following identities failed the check in region EU-WEST-1: test-list-request@iotcouncil.org.za, test-list-bounces@iotcouncil.org.za (in reply to end of DATA command))

But the "from" is not changing.

I see that messages TO the mailman server are also not being delivered ("-- 5.1.1 Requested action not taken: mailbox unavailable"). So there's another problem.

Should I just verify iotcouncil.org.za and add DKIM to its MX record? Seems like a fail...