[Dovecot] Problem with Dovecot Delivery Agent, Extra "From" lines and mbox

[Hokan]

When an mbox email contains a line that looks like a "Mail" header
it should be quoted (per RFC 4155). Sendmail's delivery agent does
this, as does Procmail delivery agent.  Dovecot deliver does not
do this.

Example line, with ">" quote:
>From hokan at hokan.org Thu Mar  8 17:28:01 2008

When reading email (IMAP) that contains such an unquoted line, the
email abruptly ends before the "Mail" line.  There may (or may not)
appear another email (visible to the client) that contains the rest 
of the email.

-- 
Hokan                           MEnet, a wholly owned subsidiary of Enet
System Administrator                Department of Mechanical Engineering
hokan at me.umn.edu                                 Institute of Technology
612.626.9800                                     University of Minnesota