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Originally Posted by deezone

I'm using courier POP3/IMAP (Maildir is ticked). I was able to login to UebiMiau now by using the email address instead of the actual username. i.e. in the username field I entered web1_test@test.co.nz and then the same password, Voila I'm in. Now there's an odd behavior though, when I'm sending emails to my exchange server (i.e. my email account), the first email I sent went through instantly. After that I quickly followed it with another email, It never went through. I tried restarting the postfix service and then did another test. First email went through but the succeeding emails didn't.

Any ideas?

Please post the output of your mail log for first and second email.