[HowTo] Replace courier with dovecot

[sci2tech]

@Bene please try my last posted dovecot.conf. Both SquirrelMail and Thunderbird are using imap protocol (and I guess that Roundcube does too) so they do not use database access. I tested and work with both Thunderbird and SquirrelMail on Debian etch and Lenny successfully. If you want you can use also telnet for it:

Quote:telnet mail.domain.tld 143
Trying 192.168.1.2...
Connected to mail.domain.tld.
Escape character is '^]'.
* OK Dovecot ready.
+ LOGIN sci2tech@domain.tld password
+ OK Logged in.
+ EXAMINE INBOX
* FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
* OK [PERMANENTFLAGS ()] Read-only mailbox.
* 3 EXISTS
* 0 RECENT
* OK [UNSEEN 1] First unseen.
* OK [UIDVALIDITY 1222117339] UIDs valid
* OK [UIDNEXT 49] Predicted next UID
+ OK [READ-ONLY] Select completed.
+ LOGOUT
* BYE Logging out
+ OK Logout completed.
Connection closed by foreign host.

With bold you have my commands not bolded answers. Also I need logs from /var/log/syslog if something go wrong so I can figure what it is.