Feizhou wrote:
Finally, I'm not so sure about the email being resent because of unreachable recipients. One thing I remember: In the postfix spool, in the defered dir, there were LOT of emails with different hash names. Looking in some of them, I noticed recipients duplicated in several of them, this should not be normal... In the logs, I could see some these hashed defered emails being repeated several times, each time with a cause why the mail was being defered.
If recipients are duplicated in several different messages, then there
That's the best explanation I've heard; it also goes to explain why others haven't had the problem. Over that number of recipients I guess there could be some redirections (through aliases) and other duplictes (it's possible to send mail to my mailbox via different domain names).
were multiple injects to the same recipients. Again, as many have requested, logs are necessary to look into this issue.
and as the OP said they've been rotated into the bitbucket, I guess it's best left here, with a note to OP to be suspecious next time, perhap s suspend sending while he checks things out:-)