[PLUG] Re: Re: Email server performance

Paul Heinlein heinlein at madboa.com
Sat Apr 16 05:17:57 UTC 2005


Wil Cooley wrote:

>   o Good support for off-line/cached mode with clients; I'm not sure 
>     how well UW or Dovecot handle these.

I'm not really sure that the server is the real issue when it comes to 
off-line support; most of the heavy lifting is done by the client. 
Thunderbird works well in off-line mode with either UW or Dovecot.

>   o Native SSL support (Dovecot probably has this; AFAIK you have to  
>     use 'stunnel' to do IMAPS with UW).

Dovecot supports linking against either OpenSSL or GNUTLS.

UW IMAP and POP daemons will readily link against OpenSSL -- no stunnel 
required. In fact, I'll go further and say that setting up UW IMAP/POP 
with SSL is almost trivially easy:

1. Build binaries against OpenSSL (which is the default in Red Hat,
    Fedora, and CentOS).

2. Put $SSLDIR/certs/imapd.pem and/or $SSLDIR/certs/ipop3d.pem into
    place (either as real files or, more likely, as symlinks).

3. Make sure that inetd or xinetd is prepared to listen to ports 993
    and/or 995.

Voila! No other configuration is necessary. At work, we've turned off 
ports 110 and 143; only the SSL ports are listening.

-- 
Paul Heinlein <> heinlein at madboa.com <> www.madboa.com



More information about the PLUG mailing list