[Mailman-Users] Not All Subscribers Receiving Daily Email

Brad Knowles brad at stop.mail-abuse.org
Wed Dec 15 01:13:55 CET 2004

At 10:20 AM -0800 2004-12-14, Easy wrote:

>  - NOT ALL subscribers of any of the ISPs are being rejected. Many
>  subscribers on ALL the ISPs are receiving the daily email just fine.

	Many ISPs will apply different anti-spam processing rules for 
different recipients.  Many recipients will not be aware of any 
anti-spam processing rules that are being used by the system on their 
behalf, or how their actions can modify those rules.

>  - Some 250 of the subscribers are now on a Topica listserv. They ALL
>  receive the daily email each day. When the same message is sent to the
>  mailman listserv some of these 250 subscribers do NOT receive the email.

	This is an indicator that at least part of the problem may 
somehow lie within Mailman, but since you're using cPanel, it's going 
to be very difficult to determine where the fault may lie.

	Of course, if the Topica mailing list is not hosted on the same 
physical and virtual machine as the Mailman mailing lists, then there 
is always the chance that anti-spam rules will be host-specific and 
not applied the same between the two systems.

>  - Emails sent directly to the subscribers, from the same email address
>  that is used to send to the mailman listserv get through just fine,
>  though email sent through mailman does not get to them.

	Again, these messages are not coming through the same system, and 
the same anti-spam rules may not be applied by the recipient machines.

Brad Knowles, <brad at stop.mail-abuse.org>

"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."

     -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
     Assembly to the Governor, November 11, 1755

   SAGE member since 1995.  See <http://www.sage.org/> for more info.

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