I have installed qmail server in my FreeBSD 4.1.1-stable box, I've also
got tcpserver, courier-imap running, ipfilter and IPsec running as well.
IPsec is running between my cllient and server box. The following
diagram illustrate the my basic networking:
Client (FreeBSD 4.1-stable) -> Server (FreeBSD 4.1.1-stable) ->Internet
(sendmail) (Qmail server)
sec.rock.com fastline.rock.com
I don't think ipfilter and IPSec blocks the connection, because server
box (FreeBSD 4.1.1-stable) can send email to the client machine (FreeBSD
4.1-stable). The problem is the client box cannot send email to the
server. Whenever it sends email, an error msg will be raised by sendmail
with the "Connection reset by server" err msg. Besides, server can
client can ping each other, and client can ping and lynx outside wild
wild internet websites. I can send emails within my server box. email
can be sent to theh client box.
Here is the error msg from /var/log/maillog:
Oct 2 14:58:04 sec sendmail[2205]: e91M8Zv00283:
[EMAIL PROTECTED], ct
laddr=swun (1000/1000), delay=05:49:29, xdelay=00:00:00, mailer=esmtp,
pri=12008
14, relay=fastline.rock.com., dsn=4.0.0, stat=Deferred: Connection reset
by fast
line.rock.com.
My nmap -v in my client machine shows:
Port State Service
22/tcp open ssh
25/tcp open smtp
111/tcp open sunrpc
587/tcp open submission
Nmap -v in the server machine shows:
Port State Service
22/tcp open ssh
25/tcp open smtp
53/tcp open domain
110/tcp open pop-3
143/tcp open imap2
5432/tcp open postgres
6000/tcp open X11
I run tcpserver with:
/usr/local/bin/tcpserver -x/usr/local/etc/tcp.smtp.cdb \
-u$QMAILDUID -g$NOFILESGID 0 smtp /var/qmail/bin/rblsmtpd\
/var/qmail/bin/qmail-smtpd 2>&1 &
The portmap_enable and sendmail_enable are set to NO in file
/etc/rc.conf.
Can anyone tell me what may be wrong with it?
Thanks
Sam.
