Centos 6 Postfix 1 IP Two Domains Two Machines Post: 302818325

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Operating Systems Linux Red Hat Centos 6 Postfix 1 IP Two Domains Two Machines Post 302818325 by SportBikeBody on Friday 7th of June 2013 10:04:23 AM

06-07-2013

Registered User

Centos 6 Postfix 1 IP Two Domains Two Machines

Hello Folks,

I have what I believe is a basic problem. I'm sure the problem is related to my incorrect understanding of the terms used by the postfix main.cf file.

I have two mail servers. 192.168.1.110 (msrecycle.com) and 192.168.1.111 (sportbikebody.com). Now what I am trying to do is have any mail for sportbikebody.com forwarded from 192.168.1.110 (msrecycle.com which is server that gets all pop3 smtp imap etc traffic from the router) to 192.168.1.111. I would love to simply forward the ports to two IPs but cannot do that with my router.

FYI HTTP is working correctly and accesses the correct server for each domain.

I know I am close because I see the log on the .111 address receiving the mail but it appears to try any resolve the sportbikebody DNS and does so which gives it the external address and therefore I get a too many hops message. I hope this is clear. Let me know what you guys want to see.

Here is tail of the log from .111 (sportbikebody.com)

Jun 7 09:45:29 www postfix/smtpd[2766]: connect from unknown[192.168.1.110]
Jun 7 09:45:29 www postfix/smtpd[2766]: 176DB5B3F: client=unknown[192.168.1.110]
Jun 7 09:45:29 www postfix/cleanup[2770]: 176DB5B3F: message-id=<033501ce6385$3b811ac0$b2835040$@com>
Jun 7 09:45:29 www postfix/qmgr[1787]: 176DB5B3F: from=<chris@msrecycle.com>, size=28211, nrcpt=1 (queue active)
Jun 7 09:45:29 www postfix/smtpd[2766]: disconnect from unknown[192.168.1.110]
Jun 7 09:45:29 www postfix/smtp[2771]: 176DB5B3F: to=<chris@sportbikebody.com>, relay=sportbikebody.com[207.172.196.140]:25, delay=0.13, delays=0.04/0/0.07/0.02, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 32BF16C014B)
Jun 7 09:45:29 www postfix/qmgr[1787]: 176DB5B3F: removed
Jun 7 09:45:29 www postfix/smtpd[2766]: connect from unknown[192.168.1.110]
Jun 7 09:45:29 www postfix/smtpd[2766]: 38E615B3F: client=unknown[192.168.1.110]
Jun 7 09:45:29 www postfix/smtpd[2766]: disconnect from unknown[192.168.1.110]

Here is the error message

<chris@sportbikebody.com>: host 192.168.1.111[192.168.1.111] said: 554 5.4.0
Error: too many hops (in reply to end of DATA command)

I am actually a body guy - I am the painter for both these domains so if you own a sportbike (or just a plain old motorcycle) and you can help me work out a few issues I am having I'll be happy to remember it when / if you need repairs.

Last edited by SportBikeBody; 06-07-2013 at 11:09 AM.. Reason: Adding Info

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LEARN ABOUT FREEBSD

tcpdrop

TCPDROP(8)						    BSD System Manager's Manual 						TCPDROP(8)

NAME

     tcpdrop -- drop TCP connections

SYNOPSIS

     tcpdrop local-address local-port foreign-address foreign-port
     tcpdrop [-l] -a

DESCRIPTION

     The tcpdrop command may be used to drop TCP connections from the command line.

     If -a is specified then tcpdrop will attempt to drop all active connections.  The -l flag may be given to list the tcpdrop invocation to drop
     all active connections one at a time.

     If -a is not specified then only the connection between the given local address local-address, port local-port, and the foreign address
     foreign-address, port foreign-port, will be dropped.

     Addresses and ports may be specified by name or numeric value.  Both IPv4 and IPv6 address formats are supported.

     The addresses and ports may be separated by periods or colons instead of spaces.

EXIT STATUS

     The tcpdrop utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     If a connection to httpd(8) is causing congestion on a network link, one can drop the TCP session in charge:

	   # sockstat -c | grep httpd
	   www	    httpd      16525 3	tcp4 
		   192.168.5.41:80	192.168.5.1:26747

     The following command will drop the connection:

	   # tcpdrop 192.168.5.41 80 192.168.5.1 26747

     The following command will drop all connections but those to or from port 22, the port used by sshd(8):

	   # tcpdrop -l -a | grep -vw 22 | sh

SEE ALSO

     netstat(1), sockstat(1)

AUTHORS

     Markus Friedl <markus@openbsd.org>
     Juli Mallett <jmallett@FreeBSD.org>

BSD
								 January 30, 2013							       BSD