We are having issues with receiving emails on our secondary domains. The only way that we can receive the emails is to allow our server to be an open relay, and I know that I don't want that.
Exchange
Last Comment
Alan Hardisty
8/22/2022 - Mon
ncheung
Which version of Exchange are you running and what have your tests shown when trying to resolve your secondary smtp domain from the Internet?
JEBCO
ASKER
SBS 2003 Exchange 2003 SP2.
220 mail.domain1.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.4675 ready at Mon, 7 Mar 2011 11:04:20 -0700
OK - 63.230.214.70 resolves to mail.doxacentral.com
OK - Reverse DNS matches SMTP Banner
0 seconds - Good on Connection time
May be an open relay.
0.484 seconds - Good on Transaction time
Session Transcript:
HELO please-read-policy.mxtoolbox.com
250 mail.domain1.com Hello [64.20.xxx.xxx] [94 ms]
MAIL FROM: <supertool@mxtoolbox.com>
250 2.1.0 supertool@mxtoolbox.com....Sender OK [78 ms]
RCPT TO: <test@example.com>
250 2.1.5 test@example.com [78 ms]
QUIT
221 2.0.0 mail.domain1.com Service closing transmission channel [78 ms]
ncheung
Did it always work or is this an additional SMTP domain?
It always worked. But the guy before me did something and the server is an opened relay. So I am trying to close the relay and get the domains the ability to be delivered.
ncheung
If the previous article does not illustrate your needs to add the secondary SMTP domain into the RUS. Try this page from technet.
Unfortunately I have no idea what the other person may have configured. Your best bet is to run a few telnets in between your configurations. The technet article should help most as it illustrates what you need.
Alan Hardisty
Please have a read of the following link to resolve your open relay and when that is done, check on www.checker.com
I made teh necessary changes and now I am no longer a mail relay. But I no longer can receive email at the secondary domains.
Delivery to the following recipient failed permanently:
jebadmin@domain2.com
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 5.7.1 Unable to relay for jebadmin@domain2.com (state 14).