A list I'm a member (not a list manager) on has a recent problem with
some subscribers not getting list email.
The list is hosted at PSU.EDU. The list server and the server it relays
outgoing email thru are not listed on any blacklists that I can find.
But suddenly many subscribers are not receiving email sent to the list.
The subscribers are at different ISPs, some big, some small.
One subscriber's recent post TO the list has:
>> Received: by LISTS.PSU.EDU (LISTSERV-TCP/IP release 14.4) with spool id
>> 67394116 for mungedlistname@LISTS.PSU.EDU; Tue, 10 Jan 2006 11:40:02 -0500
>> Received: from mail.pshift.com (MAIL.pshift.com [22.214.171.124]) by
>> f05n16.cac.psu.edu (8.12.11/8.12.11) with ESMTP id k0AGdvkw098116 for
>> <firstname.lastname@example.org>; Tue, 10 Jan 2006 11:39:57 -0500
>> Received: from mungedusername (unverified [126.96.36.199]) by mail.pshift.com
>> (Vircom SMTPRS 4.2.425.24) with SMTP id
>> <B0228138434@mail.pshift.com>; Tue, 10 Jan 2006 11:39:41 -0500
>> Received-SPF: softfail (mail.pshift.com: domain of transitioning
>> email@example.com does not designate 188.8.131.52 as
>> permitted sender)
>> X-Modus-BlackList: firstname.lastname@example.org=OK
I don't know that much about SPF - I was wondering if anyone else has
encountered this and if this is working correctly? Could SPF settings
be causing messages like this to be classified as spam and if so to then
result in messages from the list being classified as spam?