I keep getting this error.
/var/log/mail.err Jan 22 05:00:03 home exim4: ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken
Checking /var/log/exim4/paniclog, I see this.
2015-01-22 01:48:16 failed to expand condition "${if and{{bool_lax{NULL}}{bool_lax{${if eq {}{${lookup{$local_part}lsearch{/etc/vmail/$domain/passwd}}}{no}{yes}}}}}}" for vmail_deliver router: failed to open /etc/vmail//passwd for linear search: No such file or directory inside "and{…}" condition
I can verify the file is not there. This is a fresh install of Ubuntu 14.04, VPS with webuzo control panel, which prefers exim4.
Reading documentation and searching did not come up with anything. Now mail seems to be broken for that domain. Removing the paniclog, restarting exim4 as suggested in other errors does not help.
The error comes back after a day or so.
Edit: Forgot to mention that there is another domain on this vps too, does not produce this error, and does not have a passwd file too.
Best Answer
Solved: After Kondybas suggesting adding a blank passwd file, I added a new user, and that added the file, with the proper permissions, and the content exim expects to be there. It seems that exim needs at least one local user, and that domain had all forwarding users. Once I added a local user with a password, the errors stopped.
Hope this helps someone in the future.