> I just found out to while writing this, that this file can't be > found (/etc/mail/userdb.db) I decided to see if all the files that were > specified below actually existed, and this one didnt. Could this be a > problem or is this normal? > I am not sure if this relates to your question, but here are my two cents. Are you using sasl or sasl2 for authentication? The file only exists (in my case /etc/sasldb2) if I add users to it (sasldb2 -c username, then give password). To list all users for sasl2, type sasldblistusers2 at command prompt (or sasldblistusers for sasl) To check if the mail server requires authentication, type telnet localhost 25 and then ehlo localhost. If it is enabled you should get the following: [root@annubis mail]# telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 annubis.mydomain.net ESMTP Sendmail 8.12.11/8.12.11; Mon, 26 Jul 2004 15:59:55 -0500 ehlo localhost 250-annubis.mydomain.net Hello localhost.localdomain [127.0.0.1], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-AUTH DIGEST-MD5 CRAM-MD5 LOGIN PLAIN 250-DELIVERBY 250 HELP quit The line about auth is 250-AUTH and then the list of all mechanisms that you enabled. Hope this helps.