Mails sent from server rejected. Possible domain problem?

zentro · 02-03-2006, 06:51 PM

I have a PHP script that I use for notification via email.

Unfortunately, some email accounts seem to reject emails coming from my server with messages like:

Quote:

This is the Postfix program at host xxxxxxxxxxxxxxxx.com.

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the message returned below.

The Postfix program

<emailaddresshidden@recipientsdomain.com>: host xyxyxyxyxyx.com[101.101.101.101]
said: 550 <xxxxxxxxxxxxxxxx.com>: No thank you rejected:
Domain not found (in reply to RCPT TO command)

Note: For the sake of privacy I changed the IP's, hostnames, and email addresses.

By reading in various forums and heavy googling I found out that the problem could stem from my DNS settings.

My DNS settings for my domain are as follows:

Quote:

A records:
localhost.mydomain.com - 127.0.0.1 - 43200
mydomain.com - 99.153.128.201 - 43200
*.mydomain.com - 99.153.128.201 - 43200
mail.mydomain.com - 114.100.92.153 - 43200

MX record:
mydomain.com - mail.mydomain.com 10 - 43200

My email is hosted at a different host but I'm still sending out mails from the server (via the php script) from me@mydomain.com. Is this the problem?

Please help!

Thank you.

foo_bar_foo · 02-03-2006, 10:50 PM

Quote:

Originally Posted by zentro

My email is hosted at a different host but I'm still sending out mails from the server (via the php script) from me@mydomain.com. Is this the problem?

Please help!

Thank you.

yep i think that's the problem

zentro · 02-03-2006, 11:38 PM

Thanks for your reply!

OK, the way I see it, that leaves me with to possibilities:

1:
---------------------
Move the mail hosting back to my server so that my DNS records changes to:

Quote:

A records:
localhost.mydomain.com - 127.0.0.1 - 43200
mydomain.com - 99.153.128.201 - 43200
*.mydomain.com - 99.153.128.201 - 43200
mail.mydomain.com - 99.153.128.201 - 43200

MX record:
mydomain.com - mail.mydomain.com 10 - 43200

(Remember: Not my real IPs/domains)

or 2:
---------------------
Keep my mail hosting where it is (on a different server) but somehow change my DNS records so that my mails don't get rejected by recipients. The only question is: How?

Any ideas?

zentro · 02-14-2006, 02:08 AM

Anybody got any ideas? I'm desparate!

devinnull · 02-15-2006, 04:44 PM

I'd first go to http://www.DNSstuff.com and run the DNS/MX tests against your domain. This is a great site to see how your DNS looks to the rest of the world.

Make sure everything in the public DNS is working and go from there if everything checks out.

foo_bar_foo · 02-15-2006, 09:53 PM

there are a couple of ways reverse DNS can work (i think) either verifying email From header or just doing a reverse lookup on the handshake.

best thing is to forward the mail to your actual mailserver and have it sent from there.