<something> in log file on web

list Sergey
Mon, 7 Oct 2013 16:25:22 +0400
Message-Id: <user-7d2ebbcdae0d@xymon.invalid>

Hello.

Can I escape "<>" in log messages ? For example I setup to analize
/var/log/maillog for "Over quota" message. Displayed string is:

Oct  7 15:28:22 sendmail[4183]: r974LtLZ002344: to=, delay=07:06:27, xdelay=00:00:00, mailer=cyrusv2, pri=2116609, relay=localhost, dsn=4.2.2, stat=Deferred: 452 4.2.2 Over quota

E-Mail is missing but it should be in "to=<user-b730cd0ca0c1@xymon.invalid>,".

-- 
Regards,
Sergey