> 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 were multiple injects to the same recipients. Again, as many have requested, logs are necessary to look into this issue.