Hello, I'm running postfix on FC14. Followed Falko's brilliant-as-always guide to do this. I setup 3 virtual users. I'll call them a@domain, b@domain, c@domain. I inserted them into the user table in that order, and used ENCRYPT command on the password field for all. I am using my cellphone to connect to the accounts. My phone managed to connect to both incoming (IMAP) and outgoing (SMTP, duh!) servers with a@domain's credentials. However, for b and c, it only authenticated the incoming, but responds saying User Authentication failed for outgoing. If I put a's credentials for outgoing, it works. This is also true in Thunderbird. I have to use a's credentials to login to SMTP. Maillog shows the following: Using b Code: Mar 22 23:44:21 server postfix/smtpd: warning: unknown[192.168.1.1]: SASL LOGIN authentication failed: authentication failure Using a Code: Mar 22 23:48:56 server postfix/qmgr: 2F8522C1F6F: from=<b@domain>, size=1113, nrcpt=1 (queue active) Mar 22 23:48:56 server postfix/smtpd: disconnect from unknown[127.0.0.1] Mar 22 23:48:56 server amavis: (05490-04) Passed CLEAN, MYNETS LOCAL [192.168.1.1] [192.168.1.1] <b@domain> -> <firstname.lastname@example.org>, Message-ID: <4D896D9A.9050503@domain>, mail_id: fPRia-+vwGsw, Hits: -1, size: 677, queued_as: 2F8522C1F6F, 6504 ms Mar 22 23:48:56 server postfix/smtp: A58952C03D6: to=<email@example.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=6.6, delays=0.11/0.02/0.01/6.5, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=05490-04, from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 2F8522C1F6F) Since a's credentials work, it would only follow that b and c should work, too; I can't see where there would be a config issue... what could be the problem?