Building a gentoo system and had a devil of a time getting cleartext password working with the IMAP server.
new wu-imapd packages, plaintext passwords are disabled by default. This prevents Squirrelmail from using plaintext passwords to login. Since Squirrelmail and wu-imapd reside on the same server, I'm not too concerned with someone seeing the traffic between the two services. So, to enable plaintext passwords and get Squirrelmail login working again, I did the following:
* I created a file called /etc/c-client.cf and had it contain the following two lines in it:
I accept the risk
set disable-plaintext 0
Thats it! You need I accept the risk as the first line, otherwise it wont work! Save the file, and Squirrelmail should immediately start working again. No daemons to restart!
If you are running xinetd the some distribution's default configuration file resulted in an xinetd configuration that only allows connections to localhost. The file in question is /etc/xinetd.conf and should have the "only_from" line removed or commented out.
Seeing as I stumbled around the Internet for at least 5 days on this (time allowing), I tought that I'd pass this along for possible inclusion in the documentation somewhere.