I changed back to a saved /etc/postfix/main.cf file I had. The PLAIN LOGIN auth reappear fine, STARTLS work
still testsaslauthd -u u...@domain.com -p password 0: NO "authentication failed" logs: Apr 22 14:08:48 xx saslauthd[12159]: do_auth : auth failure: [user=u...@domain.com] [service=imap] [realm=] [mech=rimap] [reason=remote server rejected your credentials] Apr 22 14:48:47 xx saslauthd[12161]: do_auth : auth failure: [user=u...@domain.com] [service=imap] [realm=] [mech=rimap] [reason=remote server rejected your credentials] so I tried with telnet and my username password base64 encoded with this: % printf 'username\0username\0password' | openssl base64 and I got those: telnet localhost 587 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 host.domain.com ESMTP Postfix EHLO localhost 250-host.domain.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN STARTTLS 220 2.0.0 Ready to start TLS AUTH PLAIN myencodedbase64string= Connection closed by foreign host. ~ # telnet localhost 587 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 host.domain.com ESMTP Postfix EHLO localhost 250-host.domain.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN AUTH PLAIN myencodedbase64string= 535 5.7.8 Error: authentication failed: authentication failure saslauthd is like a black box now. How could I open it? thx Laurent