Ricardo Kleemann writes:

  The bounces directory has a lot of directories in it, <URL:mailto:[EMAIL PROTECTED]:/var/lib/mailman>[EMAIL PROTECTED]:/var/lib/mailman# ls /shared/data/couriermlm/reflexoes1/bounces|wc -l
5288

But a search in the bounces for the address also returns nothing (which makes sense because if there was a bounce then I'd see it in the logs) find /shared/data/couriermlm/reflexoes1/bounces/ -type f |xargs grep <URL:mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED] returns nothing

The mail address would not appear verbatim in the bounces. It gets encoded, in the return address, slightly, to escape special characters and punctuations. Try grepping just for the username or the domainname.

searching through mailq also results in nothing.   So evidently there's not even an attempt to send the message to this address, even though couriermlm does list it as subscribed. This is only one example. There are many others exactly like it.   How can I debug this? Maybe couriermlm is halting or crashing at a certain point in the subscriber list?

If you're invoking couriermlm from a .courier file, and it crashes, the list message should get either bounced back to the sender, or deferred and redelivered. If it's redelivered, you'd get complaints about duplicate list messages. If it gets bounced, the senders should complain about their messages getting bounced. Whatever the problem is, I think that a couriermlm crash is unlikely.

It might be worthwhile for you to analyze the collected bounces, to see if you can spot a common problem with non-deliveries, which might lead you to an answer to this question, too.

Also, when there are more than two list subscribers in the same domain, couriermlm will use multiply-addressed message to deliver messages to the recipients in the same domain, up to 20 recipients per single message. You should also grep your log file to any list message to the same domain, and collect some additional diagnostic info.


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