current-users: trouble running cyrus-imapd

Subject: trouble running cyrus-imapd
To: None <current-users@NetBSD.org, tech-net@NetBSD.org>
From: Shin'ichiro TAYA <taya@sm.sony.co.jp>
List: current-users
Date: 07/22/2005 20:43:16

Hi,

I have a mail server running cyrus-imapd-2.2.12 on NetBSD-3.99.7/i386.
It worked fine until last week.
I updated kernel and related stuffs yesterday then cyrus-imapd stopped
working.
Connection is refused by imapd.
tcpdump log follows:

10:13:17.655267 IP client.4480 > server.imap: S 3207221366:3207221366(0)
win 65535 <mss 1460,nop,nop,sackOK>
10:13:17.655292 IP server.imap > client.4480: R 0:0(0) ack 3207221367 win 0
10:13:18.120906 IP client.4480 > server.imap: S 3207221366:3207221366(0)
win 65535 <mss 1460,nop,nop,sackOK>
10:13:18.120917 IP server.imap > client.4480: R 0:0(0) ack 1 win 0
10:13:18.558430 IP client.4480 > server.imap: S 3207221366:3207221366(0)
win 65535 <mss 1460,nop,nop,sackOK>
10:13:18.558453 IP server.imap > client.4480: R 0:0(0) ack 1 win 0

sendmail claims like follows:
Jul 22 10:14:49 server sm-mta[909]: j6M1EjCl000751: SYSERR(root): Could
not connect to socket /var/imap/socket/lmtp: Connection refused by localhost

any thoughts?