Relay MTA for external delivery

[Tarkin]

endorphine44, thats the same problem I've experienced.

As Marc is saying you can untick the box and then add your isp's mail server as a relay host. Its something you can do in the admin interface, so its not that hard.

I'm only trying to find a way around it because in the past my mail server has been a lot more stable than those run by my ISP. Also I'm sure there must be a way. I'm going to have to pull out my Oreilly Postfix book and scratch my head I think.

[marcmac]

You can still send to local domains without DNS - I thought the problem was outgoing mail, not mail into zimbra, or between zimbra domains.

And again - you don't have to run DNS!

Turn off DNS lookups

Set up a relay host for outgoing mail (your ISPs mail gateway, most likely - but NOT the zimbra box).

[Tarkin]

Then you are reliant on your ISPs mail server to act as the relay. Not always a good thing.

- editing to make more useful

You can have either incoming or outgoing working depending on whether you have the box check... if you don't also have a relayhost set. So As such the problem is incoming or outgoing if you see what I mean.

And I think both he and I mean between local and external mail servers not intra zimbra or intra local mailservers.

[endorphine44]

so where and how do I set username and password for my ISP's mail server so Zimbra can authenticat with it sends to outside domains?

With dns unchecked and my ISP mail server in the MTA relay box I send from the web interface and it says it send successfull, but mail is not recieved at outside email address.

I'd rather not have to use my ISPs mail server, it's not known for reliability and virus free operation, if there is a way around that.

[hazzard]

After working on this for awhile and reading almost the entire forum for help on fixing this issue. I have figured out how to fix it!

Simply add one line to your master.cf file in /opt/zimbra/postfix/conf/

change:
lmtp unix - - n - - lmtp
anvil unix - - n - 1 anvil

to:
lmtp unix - - n - - lmtp
-o disable_dns_lookups=yes
anvil unix - - n - 1 anvil


Do not change any other part of this file if your not familliar with it, just add that one line. After making the change run the following command:
/opt/zimbra/postfix/sbin/postfix reload

You should now be able to do what you want.

Enjoy!

[endorphine44]

Next time I test email servers I'll give it a try, in the mean time I have decided to go with Citadel.org. I had problems with Zimbra and Scalix, both different issues that I didn't want to spend so much time trying to work around. Citadel has an easy installer and works correctly when it's done installing. Again thanks for the help from all of the forum.

[rruss]

I was having the same basic problem on my server. For me, it's a standalone web server with no upstream SMTP to depend on, so it has to route all mail for itself.

I was able to send mail to other domains hosted on the same server, but couldn't route off the server via webmail, command line (using /opt/zimbra/postfix/sbin/sendmail by hand), or from php scripts (which also point to postfix's sendmail program).

In the Zimbra Admin Console, the server's MTA configuration insists on having an entry for "Relay MTA for external delivery". If I set that to the same value as webmail MTA hostname, I can't route mail and get "warning: relayhost configuration problem" in my zimbra.log.

No matter what I seem to do in the admin console configuration for the server, I can't get that field to be blank (as was recommended in this thread), but I can manually edit main.cf and set "relayhost =" to nothing.

reload postfix, and it's all working... even routing mail that it's been holding for the last couple of days.

Is this a bug in zimbra console that it won't let me set the field to blank? Is there some other problem with the way I got this working that I'm overlooking?

Thanks!
-Russ