> When both the primary and backup name servers go down (no idea why,
> but it has happened 3 times in the last 3 months), Majordomo starts
> sending multiple copies of the same message to the list subscribers.
> One time it sent over 200 copies to the list before it was caught and
> needless to say the subscribers were not at all amused. Has anyone
> else seen this behaviour?
Majordomo doesn't send messages to anyone, it simply passes them to your
system's mail transfer agent - sendmail or smail, typically. I suspect the
behaviour you're seeing is your system's sendmail misbehaving when it can't
talk to the nameservers. It would do the same whether the mails came from
Majordomo or not; it's just that a mail from Majordomo typically will have a
long list of recipients, and sendmail will take a long time to try to
resolve all of them.
Probably, your sendmail daemon is kicking in and starting to redeliver a
queued messsage before its previous invocation has finished. I have seen
this behaviour as well - I always thought sendmail protected itself from
Now I have implemented Keith Moore's excellent 'bulk_mailer' to split list
mails up into more manageable chunks, I don't get this problem any more. Can
any sendmail gurus suggest a fix for us both? I'm on sendmail 8.6.12 if it
makes any difference.