Description of problem:
I noted that emails sent via squirrelmail to local users get
lost. So I looked at the problem more closely and it looks
like sendmail fails to deliver any locally submitted email
to local users.

Email from outside are delivered just fine.


How reproducible:
100%

Steps to Reproduce:
I tried to send an email to a local user using
a) telnet localhost 25
b) mail
The mail is accepted by sendmail and corresponding log entries are written:

Mar  9 20:24:18 keen sendmail[10823]: h29JOH3I010823: from=root, size=30,
class=0, nrcpts=1, msgid=<200303091924.h29JOH3I010823@keen.esi.ac.at>,
relay=root@localhost
Mar  9 20:24:18 keen sendmail[10826]: h29JOH3I010823: to=gerald, ctladdr=root
(0/0), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30026, dsn=2.0.0,
stat=Sent

However, the mail never shows up in the mailbox of the user!? Moreover,
the mailq is empty, so it is not hanging somewhere.