On 1/22/21 4:11 PM, Tom @ Gather wrote:
I am getting rejections from Hotmail
Jan 18 14:42:22 mail postfix/smtp[6571]: 046713F914: to=< helen_maryd@hotmail.com>, relay=hotmail-com.olc.protection.outlook.com[104.47.58.161]:25, delay=0.14, delays=0.06/0.03/0.04/0.01, dsn=5.7.1, status=bounced (host hotmail-com.olc.protection.outlook.com[104.47.58.161] said: 550 5.7.1 Unfortunately, messages from [167.99.151.239] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3140). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [ BN8NAM11FT014.eop-nam11.prod.protection.outlook.com] (in reply to MAIL FROM command))
I have submitted a ticket to https://support.microsoft.com/en-us/supportrequestform/8ad563e3-288e-2a61-81...
Not sure why they are blocking me. Not on any other blacklists per mxtoolbox...
Anyone else experienced this? How to resolve?
Yes, I've had this block at times. All the affected servers subscribe to SNDS and JMRP and never receive any bad reports. The process is to submit the form as you have done. This may result in mitigation without further action on your part, but if they reply to the ticket with
Not qualified for mitigation (IP address) Our investigation has determined that the above IP(s) do not qualify for mitigation.
The next step is to reply to that with an explanation of what you do.
Here's a copy of such a reply:
Beginning around 14:43 -0500 on Dec 31, mail from mail.python.org (IP 188.166.95.178) to various hotmail.com, outlook.com. live.com, etc. addresses is being blocked.
A typical response to such mail is
Jan 4 19:11:49 mail postfix/smtp[14283]: 4D8tGD3YZSzpFbf: to=<marksapiro@hotmail.com>, relay=hotmail-com.olc.protection.outlook.com[104.47.17.161]:25, delay=0.69, delays=0.55/0.01/0.11/0.03, dsn=5.7.1, status=bounced (host hotmail-com.olc.protection.outlook.com[104.47.17.161] said: 550 5.7.1 Unfortunately, messages from [188.166.95.178] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3140). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [VI1EUR05FT004.eop-eur05.prod.protection.outlook.com] (in reply to MAIL FROM command))
This mail is virtually all messages to confirmed opt-in subscribers of various python.org email lists. We do not send spam and we have various filters in place to block spam from reaching these lists.
We publish SPF and DMARC records for our domain and DKIM sign our outgoing mail.
We subscribe to your Junk Email Reporting Program (JMRP) and Smart Network Data Services (SNDS) and see no reports or unusual complaint rates.
Our IP 188.166.95.178 is not found on any blacklists checked at <https://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a188.166.95.178&run=toolpage>
Please stop blocking our mail.
This usually works. If not, you just have to persist.
My mail server is on Digital Ocean if that makes any difference.
It may. All of my recent blocks have been DigitalOcean servers including mail.python.org, but I think I've had this in the past from non- DigitalOcean servers.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan