[Mailman-Users] undelivered mail, but only to some

[D. Alan Stewart]

In what order does Mailman process subscribers when it is  
transmitting to the list? The order in which they are subscribed?  
Alphabetical by email address? Random?

On Oct 26, 2006, at 2:55 PM, D. Alan Stewart wrote:

> I am having a baffling problem with Mailman. Suddenly the list that I
> am administrating has stopped delivering mail to a subset of the
> subscribers. It's not readily apparent what those that are not
> receiving the mails have in common - the domains that I know of
> include mac.com, yahoo.com, av8inc.com. It also seems that anyone new
> added to the list does not receive emails, though they do receive the
> initial subscripion notice and the monthly reminders. I have seen
> once that someone newly subscribed received one posting and has not
> received another since.
>
> This list is provided to me by my web hosting provider, who is also
> baffled. The Mailman installation is version 2.1.5. The sendmail logs
> show successful transmissions to the users in question, at the
> correct time, so it appears Mailman is sending something, but the
> receiving end  must be discarding it. I'm one of those not receiving
> the emails. I've contacted my mail provider, mac.com, but they want a
> copy of the email being sent with complete headers. Since any new
> subscribers I've added aren't getting emails I'm having trouble doing
> this.
>
> We set up a test list. I've found that the test list works if I
> subscribe only myself. However, if I mass subscribe all the
> subscribers of the malfunctioning list to the test list, it appears
> to behave in the same manner as the malfunctioning list. That seems
> to imply that it is either the number of subscribers or that one bad
> entry in the list is creating the problem. It can't be the number of
> subscribers, there are other, bigger Mailman lists on this same host
> that seem to be working correctly. There are less than 100
> subscribers to my list. In examining the list that I am subscribing I
> can find no entries that appear malformed.
>
> Does anyone have any suggestions?
>
> TIA.
> Alan
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