> Plenty of people have this type of setup, if you already know what
you're
> doing with LDAP from the existing installation you shouldn't have any
problem
> configuring it with Dovecot.
Thanks. That's what I would have thought, but I am clearly getting
something wrong. I have dovecot with ldap installed, and I thought I had it
configured to talk with our ldap server the same way the courier imap (which
works fine) does, but all was getting was an authentication failure with
timeout.
Tried running tcpdump on the ldap server to watch the exchange,
but it didn't reveal much. I'm not an expert at reading tcpdump output, but it
looks like when I connect to the dovecot imap server and try to log in, it opens
a connection to the ldap server and then.... nothing happens. I don't see any
data exchange occurring. But as I said, I am not an expert at reading tcpdump
output.
nb-200# tcpdump -vv port
389
tcpdump: listening on fxp0, link-type
EN10MB (Ethernet), capture size 96 bytes
15:12:53.378192 IP (tos 0x0, ttl
64, id 0, offset 0, flags [DF], length: 60) nb-212.win.net.64502 >
nb-200.win.net.ldap: S [tcp sum ok] 1650141152:1650141152(0) win 65535 <mss
1460,nop,wscale 6,sackOK,timestamp 1749303533 0>
15:12:53.378319 IP (tos 0x0, ttl
64, id 31077, offset 0, flags [DF], length: 64) nb-200.win.net.ldap >
nb-212.win.net.64502: S [tcp sum ok] 4093352694:4093352694(0) ack 1650141153 win
65535 <mss 1460,nop,wscale 1,nop,nop,timestamp 954727
1749303533,nop,nop,sackOK>
15:12:53.378457 IP (tos 0x0, ttl
64, id 0, offset 0, flags [DF], length: 52) nb-212.win.net.64502 >
nb-200.win.net.ldap: . [tcp sum ok] 1:1(0) ack 1 win 1026 <nop,nop,timestamp
1749303533 954727>
15:12:53.378470 IP (tos 0x0, ttl
64, id 0, offset 0, flags [DF], length: 92) nb-212.win.net.64502 >
nb-200.win.net.ldap: P 1:41(40) ack 1 win 1026 <nop,nop,timestamp 1749303533
954727>
15:12:53.381078 IP (tos 0x0, ttl
64, id 31084, offset 0, flags [DF], length: 66) nb-200.win.net.ldap >
nb-212.win.net.64502: P [tcp sum ok] 1:15(14) ack 41 win 33304
<nop,nop,timestamp 954727 1749303533>
15:12:53.484057 IP (tos 0x0, ttl
64, id 0, offset 0, flags [DF], length: 52) nb-212.win.net.64502 >
nb-200.win.net.ldap: . [tcp sum ok] 41:41(0) ack 15 win 1026
<nop,nop,timestamp 1749303639 954727>
15:13:03.979700 IP (tos 0x0, ttl
64, id 0, offset 0, flags [DF], length: 166) nb-212.win.net.64502 >
nb-200.win.net.ldap: P 41:155(114) ack 15 win 1026 <nop,nop,timestamp
1749314134 954727>
15:13:04.076671 IP (tos 0x0, ttl
64, id 33174, offset 0, flags [DF], length: 52) nb-200.win.net.ldap >
nb-212.win.net.64502: . [tcp sum ok] 15:15(0) ack 155 win 33304
<nop,nop,timestamp 955797 1749314134>
15:13:23.300900 IP (tos 0x0, ttl
64, id 35751, offset 0, flags [DF], length: 66) nb-200.win.net.ldap >
nb-212.win.net.64502: P [tcp sum ok] 15:29(14) ack 155 win 33304
<nop,nop,timestamp 957719 1749314134>
15:13:23.407040 IP (tos 0x0, ttl
64, id 0, offset 0, flags [DF], length: 52) nb-212.win.net.64502 >
nb-200.win.net.ldap: . [tcp sum ok] 155:155(0) ack 29 win 1026
<nop,nop,timestamp 1749333562 957719>
^C227 packets captured
21204 packets received by
filter
0 packets dropped by
kernel