[Dovecot] Version 1.1 Alpha 2 Various Stuff

[Jerry Yeager]

Some preamble information…

OS X 10.4.10 (all updates)
Power Mac Dual G5, 2.0

Postfix with Dovecot SASL, Dovecot LDA, Dovecot imaps (openssl)

Mail clients

Apple Mail v 2.1
SquirrelMail v 1.4.10a
Thunderbird v 2.0.0.6
Mulberry v 4.06

For various versions of Dovecot, from 0.9m up through 1.0.3 things  
went well, no memorable big problems, with one exception: Mulberry v  
4.0.8 would/will not work; i.e. it refuse(d) to connect saying it  
could not start SSL to begin the connection. Dropped back to version  
4.0.6.



I switched to version 1.1 alpha 2 (compile and configuration  
information is attached at the end of this message)



1)	Started up Apple mail. Mail boxes disappeared in Apple Mail's  
list, except for the main Inbox mail box.

	Fixed by setting mailbox_list_index_disable = yes in the  
Dovecot.conf file, restarted both Dovecot and Mail, all the mailboxes  
reappeared and worked correctly.


2)	Started up Squirrel Mail using several different browsers. No  
problems.

3)	Started up Thunderbird. No problems.

4)	Started up Mulberry. It partially connected, but stopped with the  
error saying that it had hit the limit for maximum connections.

	Mail logs show:
dovecot: imap-login: Maximum number of connections exceeded:  
user=<username>, method=PLAIN, rip=192.168.1.1, lip=192.168.1.50, TLS

	I tried increasing the various limits in the Dovecot.conf file up  
through a maximum limit of 2048 connections, to no avail. Mulberry  
will initially connect to several of the mailboxes, but will stop  
without getting all of them and will throw up the 'over the  
connection limit' error and will then show you a dialog box that asks  
you to log-in. Attempting to doing so returns a fatal error 54. I  
have not tried Mulberry's version 4.0.8.


5)	Mail logs had this message suddenly begin appearing:

auth-worker(default): pam(username,192.168.1.1): pam_authenticate()  
failed: Authentication failure

	Fixed by completely commenting PAM authentication section out;

	It was:
	passdb pam {
	# [blocking=yes] [session=yes] [setcred=yes]
	# [cache_key=<key>] [<service name>]
	#
	... essentially a placeholder section, since everything inside is  
commented out
	#
	#
	}

	now is:
	#passdb pam {
	#
	#
	... even the outer block is commented out
	#
	#}

The error has now disappeared from the logs.


Dovecot was build using:
CPPFLAGS=-I/usr/local/include/openssl LDFLAGS='-L/usr/local/lib -R/ 
usr/local/lib' \
./configure \
--with-ssl=openssl \
--with-libiconv-prefix=/usr/local

Dovecot.conf:

# 1.1.alpha2: /usr/local/etc/dovecot.conf
base_dir: /var/run/dovecot/
protocols: imaps
ssl_listen: *:993
ssl_parameters_regenerate: 24
ssl_cipher_list: ALL:!LOW:!SSLv2
verbose_ssl: yes
login_dir: /var/run/dovecot/login
login_executable: /usr/local/libexec/dovecot/imap-login
login_user: Dovecot
login_greeting: Hello, Dovecot is ready.
valid_chroot_dirs: /var/mail/vmail/
mail_extra_groups: mail
mail_location: maildir:/var/spool/vmail/%d/%n:INDEX=/var/spool/vmail/% 
d/%n:INBOX=/var/spool/vmail/%d/%n
mail_debug: yes
mailbox_list_index_disable: yes
lock_method: flock
imap_client_workarounds: delay-newmail
auth default:
   mechanisms: plain login
   passdb:
     driver: passwd-file
     args: /etc/dovecot/passwd
   userdb:
     driver: passwd-file
     args: /etc/dovecot/users
   socket:
     type: listen
     client:
       path: /var/spool/postfix/private/auth
       mode: 432
       user: postfix
       group: postfix
     master:
       path: /usr/local/var/run/dovecot/auth-master
       mode: 384
       user: virtual
       group: virtual

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