pop3 retr responses too large lines - Fails with current python's poplib

[Timo Sirainen]

On 09 Apr 2015, at 06:52, Guillermo M. Narvaja <guillermo.narvaja at fierro.com.ar> wrote:
> 
> Since December 2014, clients using the Python poplib library (getmail in
> my case) started to limit the line length of RETR and other command
> responses sent from the server to 2048 bytes:
> 
> See https://bugs.python.org/issue16041 (Included at least in
> Python-2.7.9)
> 
> Dovecot doesn't have line split in the POP3 module, so Python fails to
> retrieve messages with long lines.
> 
> RFC 1939 says:
> "
>   Responses in the POP3 consist of a status indicator and a keyword
>   possibly followed by additional information.  All responses are
>   terminated by a CRLF pair.  Responses may be up to 512 characters
>   long, including the terminating CRLF.
> "
> 
> I think dovecot-pop3 should split it's output in lines of at least 512
> characters. Or at least it should have a "pop3_max_line_length" setting
> (like "imap_max_line_length").

Um. This is talking about POP3 responses themselves - not about the actual email message body. Dovecot's POP3 reponses are short always I think. The message body is sent exactly as it was originally saved. Changing this could break things like PGP/SMIME signing and so on.