Ticket/Mail Error

There is a certain ticket that is causing the following error:
f7M83Zq04350 128949 Wed Aug 22 10:03 <someadd@somehost.com
(mailer prog died with signal 11)
"| /opt/rt2/bin/rt-mailgate --queue

The ticket has 92K attachment (jpeg). The ticket is being created everytime
sendmail runs, seemingly without errors. What is it causing the problem

We using rt-1-3-79 ang PostgresQl 7.2.