Since upgrading to Wheezy I've been unable to send emails via my own mail server which used to have a functioning combination of Dovecot, saslauthd and postfix using pam.
Now, running testsaslauthd as root worked fine:
$ sudo testsaslauthd -s smtp -u <myusername> -u <mypassword>
$ sudo testsaslauthd -s smtpd -u <myusername> -u <mypassword>
$ sudo testsaslauthd -u <myusername> -u <mypassword>
All gave
0: OK "Success."
Running as myself or with sudo -u postfixwould however give me a permission denied error. After checking the permissions on /var/spool/postfix/var/run/saslauthd/ and the files in there I decided to run sudo usermod -a -G sasl postfix which made testsaslauthd run fine for the postfix user as well.
However, I'm still getting these errors in /var/log/mail.log
postfix/smtpd[27652]: warning: SASL authentication failure: Password verification failed
warning: unknown[<redacted>]: SASL PLAIN authentication failed: authentication failure
warning: SASL authentication failure: Password verification failed
warning: unknown[<redacted>]: SASL PLAIN authentication failed: authentication failure
lost connection after AUTH from unknown[<redacted>]
disconnect from unknown[<redacted>]
( is my client's IPv6 address, removed because it's irrelevant clutter)
/var/run/saslauthd is a symlink pointing at /var/spool/postfix/var/run/saslauthd btw.
Anyone have any pointers?
Best Answer
Apparently the error was in my
/etc/postfix/main.cf, adding the following line magically fixed everything:I could've sworn it was there before I upgraded…