ну вот результат выполнения команды 
 
Name        : imap                         Relocations: (not relocateable) 
Version     : 2001a                             Vendor: Red Hat, Inc. 
Release     : 18                            Build Date: Sat 25 Jan 2003 09:02:53 AM MSK 
Install Date: Tue 14 Oct 2003 01:29:18 AM MSD      Build Host: porky.devel.redhat.com 
Group       : System Environment/Daemons    Source RPM: imap-2001a-18.src.rpm 
Size        : 2384948                          License: University of Washington Free-Fork License 
Signature   : DSA/SHA1, Mon 24 Feb 2003 09:26:01 AM MSK, Key ID 219180cddb42a60e 
Packager    : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla> 
URL         : http://www.washington.edu/imap/ 
Summary     : Server daemons for IMAP and POP network mail protocols. 
Description : 
The imap package provides server daemons for both the IMAP (Internet 
Message Access Protocol) and POP (Post Office Protocol) mail access 
protocols. The POP protocol uses a "post office" machine to collect 
mail for users and allows users to download their mail to their local 
machine for reading. The IMAP protocol allows a user to read mail on a 
remote machine without downloading it to their local machine. 
 
Install the imap package if you need a server to support the IMAP or 
the POP mail access protocols. 
 
 
 
и что? Как настроить этот imap сервер + сделать связку с sendmail?