[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
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