PTR Record Issue...

[arvindhar]

Hi...

I'm using mdaemon 10.0.0... version. for smtp relay.

I have problem while relaying mails to aol.com through mifi-microsense.com relay server and it is behind the pix firewall. Error says reverse lookup issue.

How do i confirm this problem, this is due to my PTR Record setup issue or some other issue.

Message

Wed 2008-12-24 10:16:58: [14:1] Attempting SMTP connection to [64.12.138.57:25]
Wed 2008-12-24 10:16:58: [14:1] Waiting for socket connection...
Wed 2008-12-24 10:16:59: [14:1] * Connection established (192.168.44.6:1127 -> 64.12.138.57:25)
Wed 2008-12-24 10:16:59: [14:1] Waiting for protocol to start...
Wed 2008-12-24 10:16:59: [14:1] <-- 220-rly-md01.mx.aol.com ESMTP mail_relay_in-md01.7; Tue, 23 Dec 2008 23:47:00 -0500
Wed 2008-12-24 10:16:59: [14:1] <-- 220-America Online (AOL) and its affiliated companies do not
Wed 2008-12-24 10:16:59: [14:1] <-- 220- authorize the use of its proprietary computers and computer
Wed 2008-12-24 10:16:59: [14:1] <-- 220- networks to accept, transmit, or distribute unsolicited bulk
Wed 2008-12-24 10:16:59: [14:1] <-- 220- e-mail sent from the internet. Effective immediately: AOL
Wed 2008-12-24 10:16:59: [14:1] <-- 220- may no longer accept connections from IP addresses which
Wed 2008-12-24 10:16:59: [14:1] <220> EHLO mifi-microsense.com
Wed 2008-12-24 10:17:00: [14:1] <-- 250-rly-md01.mx.aol.com peer name unknown
Wed 2008-12-24 10:17:00: [14:1] <250> MAIL From:<tlpoeil>
Wed 2008-12-24 10:17:00: [14:1] <250> RCPT To:<tlpoeil>
Wed 2008-12-24 10:17:00: [14:1] <250> DATA
Wed 2008-12-24 10:17:00: [14:1] <-- 354 START MAIL INPUT, END WITH "." ON A LINE BY ITSELF
Wed 2008-12-24 10:17:00: [14:1] Sending <c> to [64.12.138.57]
Wed 2008-12-24 10:17:00: [14:1] Transfer Complete
Wed 2008-12-24 10:17:01: [14:1] <-- 421-: (DNS:NR) http://postmaster.info.aol.com/errors/421dnsnr.html
Wed 2008-12-24 10:17:01: [14:1] <421> QUIT
Wed 2008-12-24 10:17:01: [14:1] <-- 221 SERVICE CLOSING CHANNEL
Wed 2008-12-24 10:17:01: [14:1] This message is 18 minutes old; it has 42 minutes left in this queue
Wed 2008-12-24 10:17:01: [14:1] SMTP session terminated (Bytes in/out: 9155/26039)
Wed 2008-12-24 10:17:01: ----------

[HoustonIT]

Whenever you setup a new email server, this tool helps alot: http://www.mxtoolbox.com/diagnostic.aspx. Also, when it comes to reverse dns, your ISP will have to setup the PTR record. I just went through 2 hours of telephone support hell trying to find the right people to talk to at AT&T, and then I had an epiphany. If you do a whois lookup on your email server's internet IP address, you should be able to get the right support info to have the record created. I did, called them up, and a ticket was created in @ 10 minutes. The record was live within 6 hours.

[Freaktech]

You may also have to have an SPF record setup with your hosting company. Many email servers are checking for these days and will reject emails from you if you do not have one.