collect: I/O error on connection

I have a server running Backup Exec 9.0, after it is done backing up it is
supposed to send a mail to a few recipients. It used to work before I
installed Drac and SMTPAUTH. Could this be the problem? If so how would I
resolve it. Could it be a size limitation? If so how do I check?

Here is my error log:
Dec  9 12:52:08 mail sendmail[18359]: hB9H7lmR018359: SYSERR(root): collect:
I/O error on connection from server.domain.com, from=<backup-9IKiO1iGCm/[email protected]>
Dec  9 12:52:08 mail sendmail[18359]: hB9H7lmR018359:
from=<backup-9IKiO1iGCm/[email protected]>, size=0, class=0, nrcpts=1, proto=SMTP, daemon=MTA,
relay=server.domain.com [192.168.1.6]

another

Dec 10 17:40:55 mail sendmail[16789]: hBALetOV016789:
from=<backup-9IKiO1iGCm/[email protected]>, size=0, class=0, nrcpts=1,
msgid=<200312102140.hBALetOV016789-K6BkUrRzLMdtswb4iDofSQ@public.gmane.org>, proto=SMTP, daemon=MTA,
relay=server.domain.com [192.168.1.6]
Dec 10 17:40:55 mail sendmail[16789]: hBALetOV016789:
to=<jeremyrodriguez-ha5VgVVzQG/zxgTakmzh5gC/[email protected]>, delay=01:00:00, pri=30000,
stat=timeout waiting for input during message collect

BTW:sendmail-8.12.8-9.90
Anybody have any suggestions?
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