-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Hi,
I do have a combination of postfix and mailman and use postfix as a relayhost. I get all the mails for mailman via fetchmail. The whole system is Debian 8 with its packages for postfix (2.11.3-1) and mailman (2.1.18-2). Now to the problem: Since several months emails sometimes are duplicated (recipients got them twice ore more) when they were sent to the members of the mailing lists. The problem does occur, after mailman has handled the incoming mail and has handed it over to postfix. The problem is somehow sporadicly and I didn't find a solution so far. Does anyone have suggestion where I should dig deaper? This is the output form postconf -n: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no config_directory = /etc/postfix inet_interfaces = all inet_protocols = all mailbox_command = procmail -a "$EXTENSION" mailbox_size_limit = 0 message_size_limit = 51200000 mydestination = hostname.local, localhost.local, localhost myhostname = hostname.local mynetworks = 127.0.0.0/8 [::1]/128 myorigin = /etc/mailname readme_directory = no recipient_delimiter = relayhost = [smtp.myhost.de] smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl/sasl_passwd smtp_sasl_security_options = noanonymous smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) What information should I provide here further? BR Marco -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJWJrECAAoJEC1y3OsA+e10WWoP/RBpg/MXno/INZU1mYi6inFc dQH1PDute8fLQNnwgqOoNv0+RABzyt6HwINF0Sm3elIk6o2JRBiR8xO2CohM4Drm Bo4dEw9qI4Vd56h9cKvFya9k38BBY/ZP33xR6SNY3DzaPUPoCqqieSsw/uJPGlKP Kr6g5N54wDgxsFJfCDESrx28EO8MyfFZnKmxcnJ8qlo2YMFWTMHzRISI5hOloxyq HZyMl8N6jQLDIX0+WyMHbLoXXhYvhQ8FdJ+TUhORMs9ApxXC3U1bbLelhrNSTj2e 8fexa5lOo+TNhLiZfDgDoNY4f75SFbDhPLUE9cl72WtbItC8ecNULZtQcGHi/EZa vxdK4o3HrH3SRW66mhLRwFu4Mdb1zKn9gRjFs8ZUoW/JWzQFwOMGkb5aK0tcfnR5 Kg9/7i7Z6WR+x/6n3HbFpYQ5kAhOg6xG8vgxSDug6qvfKaOXB2gGrk7EpaEofNY4 L+EKLVkgEjishpdmnDniCvzeHCwPV+Mu3w6jYzZwown+GRfUcB2kMOsGnAkQEvvX SYu1+wEGJnrWWEYUx85Dx9afJ/MLyKLzJCYyWv5nrBsukTUmwXm701fYxrZsnOIh /QPB4mjE6NT7IxE6GPWet6bLIt6dwC3D2nhJpllI9dn48FGDI4Br4o9hMiguLUJP cp4Uk7cb3Y++wfhG6A+j =4S0O -----END PGP SIGNATURE-----