I've just installed Dovecot 0.99.12.1 onto a White Box EL 3 server. I'm
mostly following the email server setup instructions at
http://www.wanderingbarque.com/mailserver.html and getting Dovecot to
work is the last task to complete.
I've compiled Dovecot with LDAP support. I'm authenticating Postfix via
SASL to the LDAP database just fine, and I also authenticate and
manipulate LDAP info from JAMM very well, too. However, Dovecot
authentication seem to hang up when a correct password is submitted (POP
or IMAP... it doesn't matter).
Here's an example of the problem:
[root at kayak /etc] telnet localhost 110
Trying 127.0.0.1...
Connected to localhost.bramble.com (127.0.0.1).
Escape character is '^]'.
+OK dovecot ready.
user repetty at bizzy.mine.nu
+OK
pass bogeybogey
sadf
hello?
^]
telnet> q
Connection closed.
As you can see, once I hit the return key to submit the password I do
not get another prompt. In fact, Dovecot doesn't respond at all although
it seems to respond to the escape character just fine.
Additionally, dovecot-auth starts soaking up CPU time... until I kill
the process (dovecot-auth must be killed manually.)
22:15:32 up 32 days, 21:40, 5 users, load average: 1.05, 1.02, 0.98
121 processes: 119 sleeping, 2 running, 0 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 50.5% 0.0% 0.5% 0.0% 0.0% 0.0% 48.8%
cpu00 66.7% 0.0% 0.0% 0.0% 0.0% 0.0% 33.2%
cpu01 34.4% 0.0% 1.1% 0.0% 0.0% 0.0% 64.3%
Mem: 318260k av, 300740k used, 17520k free, 0k shrd,
24380k buff
141540k actv, 28364k in_d, 3864k in_c
Swap: 655352k av, 80868k used, 574484k free
94736k cached
PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
23846 dovecot 25 0 1928 1928 1352 R 49.7 0.6 27:30 0
dovecot-auth
23847 dovecot 15 0 1072 1072 868 S 0.0 0.3 0:00 1
imap-login
23848 dovecot 15 0 1072 1072 868 S 0.0 0.3 0:00 1
imap-login
23849 dovecot 15 0 1160 1160 936 S 0.0 0.3 0:00 1
imap-login
23850 dovecot 15 0 1136 1136 928 S 0.0 0.3 0:00 0
pop3-login
23851 dovecot 15 0 1140 1140 928 S 0.0 0.3 0:00 1
pop3-login
23852 dovecot 15 0 1140 1140 928 S 0.0 0.3 0:00 0
pop3-login
23858 dovecot 15 0 1068 1068 868 S 0.0 0.3 0:00 0
imap-login
23870 dovecot 15 0 1064 1064 864 S 0.0 0.3 0:00 1
pop3-login
23886 dovecot 15 0 1060 1060 864 S 0.0 0.3 0:00 1
pop3-login
23916 dovecot 15 0 1064 1064 864 S 0.0 0.3 0:00 0
pop3-login
From the client's point of view, the server never seems to come back
after the account password is submitted. Dovecot's log shows that it
eventually times out the client, although the client never seems to get
wind of this:
pop3-login: Dec 19 22:13:08 Info: Disconnected: Inactivity [192.168.0.6]
I know that Dovecot is connecting to the LDAP server because if I mess
up the Dovecot LDAP password in the dovecot.conf file I get an
authentication error (as I should):
dovecot-auth: Dec 19 20:52:19 Error: LDAP: ldap_simple_bind_s()
failed (dn cn=dovecot,dc=dillo,dc=info): Invalid credentials
Again, if client submits an incorrect email account password everything
works as it should: Dovecot tells the client that the password is
incorrect, over and over, if necessary. However, if the password is
entered correctly then Dovecot hangs up for good.
--Richard