Hello,
I'm assisting a small non-profit organization with their informational news
listserv which is running on Mailman version 2.1.20.
The issue is that list posts sent to AOL subscriber addresses are now bouncing
as undeliverable with the bounce code: "521 5.2.1 : AOL will not accept
delivery of this message."
This issue just began several days ago and 200+ subscribers with AOL email
addresses are now identified as bouncing in Mailman admin.
I understand last year AOL (and Yahoo) made changes to their email systems
which might contribute to this issue. However it didn't seem to impact our list
subscribers with AOL email addresses until just now.
The bounce email message for each subscriber appears as:
----
A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
emailaccounth...@aol.com
host mailin-03.mx.aol.com [64.12.91.196]
SMTP error from remote mail server after end of data:
521 5.2.1 : AOL will not accept delivery of this message.
----
Unfortunately the list server runs on a host machine maintained by another
non-profit, which in turn contacts with a small local hosting provider. And we
don't have access to changing any list server configuration parameters, beyond
what is available in the list owner admin.
And unfortunately the hosting provider will not make any changes to the server
for specific lists. We are just grateful the free listserv service and that
they keep the version of Mailman up-to-date.
And we are unable to setup a white list or feedback loop (FBL) with AOL as we
don't have access to the postmaster or abuse email accounts for the list server
domain.
We have sent an email to http://postmaster.info.aol.com/SupportRequest.php
to request unblocking out list email address and/or the list server IP
(assuming one or the other is actually "blocked", we have no idea at this
point), but have yet to receive a response from AOL.
The error codes page at https://postmaster.info.aol.com/error-codes
says this about the bounce error noted above:
AOL will not accept delivery of this message
This is a permanent bounce due to:
* RFC2822 From domain does not match the rDNS of sending server.
* RFC 2822 FROM address does not have an A record and is not a valid
domain.
* IP has a poor reputation and mail is sent to multiple recipients.
* There are multiple From address in the mail headers and the IP
reputation is poor.
Before I dive into the details above and the info within the document at
https://postmaster.info.aol.com/tech-requirements, I'm hoping to hear some
potential simple solutions that may be applied to our particular solution.
I can post the content of the list email a headers, but I wish to avoid posting
the info in a public forum,
Thank you for any advice.
------------------------------------------------------
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