Re: postfix behind a router

2 msg	hash table not matching subdomains
18 msg	Non-delivery problem
3 msg	tracing mail
5 msg	different SMTP ip sender in one instance of pos...
18 msg	Three Postfix Errors
10 msg	Conditional relay to a barracuda spam filter
2 msg	Postfix as honeypot
3 msg	postqueue -p
17 msg	Patch to pas all the recipients of a mail to th...
5 msg	Postfix DBD Help
4 msg	Send and receive mail on different ports?

postfix behind a router
\ Oiro Isaiah (16 Nov 2007)
. \ Matthias Schmidt (16 Nov 2007)
. . \ Victor Duchovni (16 Nov 2007)

1 msg	postfix to access mail from external host.
4 msg	Three installation/configuration issues
9 msg	Reject SMTP connection if two RBL match
3 msg	Holding Large Emails
9 msg	Monitor Relaying
7 msg	Sender address rejected when sending messages t...
1 msg	Problem using Postfix with LDAP using STARTTLS
7 msg	resources for 'only virtual domains'

Subject:	Re: postfix behind a router
Group:	Postfix-users
From:	Victor Duchovni
Date:	16 Nov 2007

On Fri, Nov 16, 2007 at 02:36:32PM +0900, Matthias Schmidt wrote:

> you need to setup your router for that by defining port forwarding rules
> to your mailserver.

Read:

http://www.postfix.org/BASIC_CONFIGURATION_README.html

Especially:

http://www.postfix.org/BASIC_CONFIGURATION_README.html#proxy_interfaces

If the router also does source NAT (it should not, but it may) you
must exclude the router's internal IP from "mynetworks":

# Don't allow relay from source NAT router at say: 192.168.1.1
mynetworks = !192.168.1.1, 192.168.1.0/24

Then find close matches in

http://www.postfix.org/STANDARD_CONFIGURATION_README.html

and base the rest of the configuration on elements of these. Look at

http://www.postfix.org/ADDRESS_REWRITING_README.html

for rewriting advice with non-public internal domains and other
important address management topics. Look for other good stuff at:

http://www.postfix.org/documentation.html

and finally:

http://www.google.com/search?q=site:postfix.org+your+search+terms

--
Viktor.

Disclaimer: off-list followups get on-list replies or get ignored.
Please do not ignore the "Reply-To" header.

To unsubscribe from the postfix-users list, visit
http://www.postfix.org/lists.html or click the link below:
<mailto:majordomo?body=unsubscribe%20postfix-users>

If my response solves your problem, the best way to thank me is to not
send an "it worked, thanks" follow-up. If you must respond, please put
"It worked, thanks" in the "Subject" so I can delete these quickly.