Alias Problem

[admin at kclinux.net]

I have a client with one of our Red Hat 9.0 servers using sendmail. The
email works perfectly for all email accounts and aliases except one.
emergency-pager at customers.domain.com is an email address that is forwarded
to a pager.phone.number at pagercompany.com. I can email the
pager.phone.number at pagercompany.com directly just fine and it comes
through. When I email the alias, I get:

Your message did not reach some or all of the intended recipients.

Subject: test
Sent: 10/8/2003 1:31 PM

The following recipient(s) could not be reached:

emergency-pager at xxxxx.com on 10/8/2003 12:49 PM
The message could not be delivered because the recipient's mailbox is full.

Mailbox full? WTF? It's an alias!

I look at all the aliases and everything is 100% fine. It's pointed to the
correct email address.  The alias before and after this alias in the
config work 100%.

I made sure (twice) that someone didnt accidently make an account
"emergency-pager", which there wasnt.

Anyone ever have this problem before?

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