Puzzling HELO Rejects

I have very little postfix experience; please be gentle.

I'm seeing random odd rejects in my zimbra.log:

Quote:

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Feb 2 13:08:36 webmail postfix/smtpd[7819]: connect from 062.fictionwise.com[206.137.17.62]
Feb 2 13:08:36 webmail postfix/smtpd[7819]: NOQUEUE: reject: RCPT from 062.fictionwise.com[206.137.17.62]: 450 <fwmail.NJCHATHAM>: Helo command rejected: Host not found; from=<info@fictionwise.com> to=<valid.address@jeffarnold.net> proto=ESMTP helo=<fwmail.NJCHATHAM>
Feb 2 13:08:36 webmail postfix/smtpd[7819]: disconnect from 062.fictionwise.com[206.137.17.62]

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If, however, I do an nslookup, the host is (generally) found:

Quote:

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[root@webmail ~]# nslookup 062.fictionwise.com
Server: 192.168.2.29
Address: 192.168.2.29#53

Non-authoritative answer:
Name: 062.fictionwise.com
Address: 206.137.17.62

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and a reverse lookup also works:

Quote:

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[root@webmail ~]# nslookup 206.137.17.62
Server: 192.168.2.29
Address: 192.168.2.29#53

Non-authoritative answer:
62.17.137.206.in-addr.arpa name = 062.fictionwise.com.

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What am I missing?

did you disable dns lookups in your postfix install?

Currently, lookups are enabled. I'm at work, and can't make access out thru our firewall on port 7071.

And that raises two more questions...

1) How can I reset the "management port" away from 7071 to something like 8080?

2) Is the lookups flag something I can toggle at the command line? I have access to SSH.

-j

the question is...why is 062.fictionwise.com introducing itself as fwmail.NJCHATHAM?

you can explore the command line like this:

zmprov gacf | grep -i lookup
zmprov gs <your-server-name> | grep -i lookup

so you can enable/disable lookups:
zmprov ms <your-server-name> zimbraMtaDnsLookupsEnabled FALSE (or TRUE)

i think you still have to edit the tomcat server.xml in order to change the admin console port number, though there is a zimbraAdminPort config parameter

Thank you bobby, I missed that.

Marcmac, I disabled DNS checks in the global MTA tab, and the mail is coming through now.