[Dovecot] dovecot weird bug

I found the bug, there are two errors:

1. Squirrelmail is wrongly formating multipart/alternative messages.

Look here:

------=_20090510163738_24160 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: 8bit

a<br /> *<------ HERE* ------=_20090510163738_24160-- All other clients insert an '\n' here, but squirrelmail.

2. When this king of message (above) is compressed (in order to use zlib plugin), dovecot dies.

Best Regards, Fernando