Am Mo, den 20.03.2006 schrieb Aleksandar Milivojevic um 17:32:
There's also IMAP proxy as part of Horde project (available only from CVS). http://www.horde.org/.
http://centos.karan.org/el4/extras/stable/i386/RPMS/repodata/repoview/up-ima...
http://www.invoca.ch/pub/packages/imapproxy/
Both have pros and cons. Perdition does PO3, IMAP4, supports TLS and can proxy connections to different servers based on username.
http://www.invoca.ch/pub/packages/perdition/
The required vanessa_* packages are available there too.
(I run it on CentOS 4.2 x86_64)
As said by Aleksandar and Les, opting for one depends on the goal(s) you have for using a POP3/IMAP proxy.
Alexander