[Exim] Bad data from mailer

Our backup software sends notifications via smtp,
naturally they dont work.
Snooping with tcpdump I was able to find out following.

Backup Exec 9.0 from Veritas send folloving:

MAIL FROM: <"BE90" <backupexec@???>>

and Exim responds like this:

501 <"BE90" <backupexec@???>>: "@" or "." expected after ""BE90""

Is there any way to tell Exim to accept that as I dont believe that
the people at Veritas will fix their crap.

Cheers..
Lauri