I have found this link: http://www.mail-archive.com/amavis-u...@lists.sourceforge.net/msg04286.html in which almost the same problem as mine is described. However my setup is different. This is what I have:
OS: Ubuntu 8.04 (Hardy) x32 Postfix: 2.5.1-2ubuntu1.2 Amavis: 2.5.3-1ubuntu3 ClamAV: 0.96.3+dfsg-2ubuntu0.10.04.1~hardy2 (Just updated this morning) Dovecot: 1.0.10-1ubuntu5.2 I can't figure it out why "duplicated mails" are happening just looking at the mail.log files... Is there any other files that I should be looking at? I just updated clamav from the backport repositories, so I hope that solves my problem. I will confirm that later. Thank you.