[Mailman-Users] 24 h delays in e-mails distribution.

[Andy]

Hi!

There is a problem with extremely slow e-mails distribution over discussion
lists. Mails are delayed from about 12 to 24 hours (no matter what activity on
the lists, even when list is almost not active at all the delay is still that
big).
The problem with slow mails distribution concerns not only mails
distributed to subscribers, but also administrative mails send by
mailman (for example as reply to commands sent to
request-listname at domain.name).
However, e-mails appear quickly (virtually no delay) in the archive, but I
repeat that their distribution to list members is delayed by many hours, and
some e-mails even go astray.

What is the cause of such problems?

Andy