#465 getMail raises postgres index error on addMessage

[Kevin Campbell]

ERROR: index row requires 25812 bytes, maximum size is
8191 INSERT INTO mm_message (id, ticket_id, message_id,
from_name, from_email, subject, msg_date, msg_to, cc,
bcc, reply_to, raw_headers, body, html_body) VALUES
(81585, 61646, ...)

Looks like it's adding in an attachment into mm_message.

[Kevin Campbell]

Logged In: YES
user_id=1241761

This was due to a malformed incoming email. Added in a
sanity check to the code to prevent message ids of over 1024
characters in size. Doesn't seem to be any limit given in
RFC2822, but for practical terms I doubt message ids of this
size will ever be reached.