I also get the unrouteable address and I'm unable to send welcome emails to customers (looks pretty bad when it takes a new customer a week to signup.) I am pretty sure this is because I don't have any domains nor email addresses setup under my admin user account...
Here is my error:
2014-01-25 14:48:36 cwd=/usr/local/directadmin 2 args: /usr/sbin/sendmail -t
2014-01-25 14:48:36 1W7C1k-0002h8-Mi <=
[email protected] U=diradmin P=local S=2856 T="Your account for customerdomain.com is now ready for use." from <
[email protected]> for
[email protected]
2014-01-25 14:48:36 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1W7C1k-0002h8-Mi
2014-01-25 14:48:36 cwd=/usr/local/directadmin 2 args: /usr/sbin/sendmail -t
2014-01-25 14:48:36 1W7C1k-0002h8-Mi ** [email protected] F=<[email protected]>: Unrouteable address
2014-01-25 14:48:36 cwd=/var/spool/exim 7 args: /usr/sbin/exim -t -oem -oi -f <> -E1W7C1k-0002h8-Mi
2014-01-25 14:48:36 1W7C1k-0002hB-O3 <=
[email protected] U=diradmin P=local S=2854 T="Your account for customerdomain.com is now ready for use." from <
[email protected]> for
[email protected]
2014-01-25 14:48:36 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1W7C1k-0002hB-O3
2014-01-25 14:48:36 1W7C1k-0002hC-OO <= <> R=1W7C1k-0002h8-Mi U=mail P=local S=3714 T="Mail delivery failed: returning message to sender" from <> for
[email protected]
2014-01-25 14:48:36 1W7C1k-0002h8-Mi Completed
2014-01-25 14:48:36 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1W7C1k-0002hC-OO
2014-01-25 14:48:36 1W7C1k-0002hC-OO ==
[email protected] R=userforward defer (-1): failed to stat /usr/local/directadmin/diradmin/. (No such file or directory)
2014-01-25 14:48:37 1W7C1k-0002hB-O3 =>
[email protected] F=<
[email protected]> R=lookuphost T=remote_smtp S=2944 H=gmail-smtp-in.l.google.com [173.194.79.27] X=TLSv1:RC4-SHA:128 C="250 2.0.0 OK 1390690017 eb3si5940338pbd.257 - gsmtp"
2014-01-25 14:48:37 1W7C1k-0002hB-O3 Completed
What are the step by step instructions to sort this out?
As you can see I don't have any admin user domain setup inside DirectAdmin (never have in 5 years.)