[Dovecot] compressed IMAP traffic

[Timo Sirainen]

On Mon, 2009-09-28 at 15:38 -0300, Leonardo Rodrigues wrote:
>     trying LZO and DEFLATE gives an error:
> 
> [root at correio dovecot]# gnutls-cli --insecure -p 993 localhost --comp 
> LZO   
..
> Sep 28 15:35:05 correio dovecot: imap-login: Disconnected (no auth 
> attempts): rip=127.0.0.1, lip=127.0.0.1, TLS handshaking: SSL_accept() 
> failed: error:1408A0BB:SSL routines:SSL3_GET_CLIENT_HELLO:no compression 
> specified

And DEFLATE gives the exact same error? LZO isn't supported by OpenSSL.

>     do the IMAP4 server you tried is remotely accessible so i can try 
> from a different machine ? Maybe we're dealing with some client lack of 
> compatibility and not server one ......

Well, not the same server but looks like this one works too:

gnutls-cli --priority NORMAL:+COMP-DEFLATE -p 993 secure.emailsrvr.com

And just for fun I tried imap.gmail.com, that didn't support
compression.
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