08-28-2017 9:57 AM
My wife has one friend who is unable to email her at sbcglobal.net. I asked this sender to forward me the bounce back message, see below. Can ATT do anything or is this a problem for the other domain admins?
flph831.prodigy.net rejected your message to the following email addresses:
flph831.prodigy.net gave this error:
Connections not accepted from servers without a valid sender domain.flph831 Fix reverse DNS for 18.104.22.168
Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept email from certain senders, or another restriction may be preventing delivery.
Diagnostic information for administrators:
Generating server: GARExchMX01.Garrecords.com
Total retry attempts: 8
Remote Server returned '550 5.7.1 Connections not accepted from servers without a valid sender domain.flph831 Fix reverse DNS for 22.214.171.124'
Original message headers:
Received: from GARExchMX01.Garrecords.com (10.1.20.54) by
GARExchMX01.Garrecords.com (10.1.20.54) with Microsoft SMTP Server (TLS) id
15.0.847.32; Thu, 24 Aug 2017 21:15:49 -0500
Received: from GARExchMX01.Garrecords.com ([fe80::a5f1:9f39:a943:de82]) by
GARExchMX01.Garrecords.com ([fe80::a5f1:9f39:a943:de82%12]) with mapi id
15.00.0847.030; Thu, 24 Aug 2017 21:15:37 -0500
From: Pat <zzzzzzz@Garrecords.com>
To: Mary <firstname.lastname@example.org>
Subject: RE: Bounce back
Thread-Topic: Bounce back
Date: Fri, 25 Aug 2017 02:15:37 +0000
Solved by: Go to Solution.
08-28-2017 10:06 AM
This is caused by either no reverse DNS record (PTR) or an error in the DNS record.
Most mail servers will not accept messages from IPs that do not have an valid PTR as this was a common tool for spammers to sent spam then disappear.
This is a generic check that pretty much any mail provider does to first validate that the sender is authorized.
The sender domain support will have to make sure all their DNS records and mail server settings meet minimum security requirements to send mail.
11-27-2017 7:19 PM
How do I set the PTR record for a host with static IP? At the moment it just gives the hostname; the doman name is preset as attlocal.net. I'd like to change this to my actual domain name. From what I see on the web this has to be done by AT&T as it is my ISP.
11-27-2017 7:29 PM
AT&T does not have provisions for providing PTR records on Residential accounts. Is this a Business or Residential Internet account? Another thing you can do is route the e-mail through the AT&T Mail Relay server, though you may have to take special steps to get AT&T to allow your non-"Att.net" domain e-mail address as well.
10-04-2018 9:28 AM
I am having a client's email rejected with a "flph825.prodigy.net gave this error" and "Fix reverse DNS for xx.xxx.xx.xxx (IP), and the rDNS tests all come back that it's correctly configured. I'm finding a lot of posts that say others are having this issue, how do I fix it? This one was recent - 8/28/18 "We have one vendor that we are getting these kickbacks from as well. Our reverse DNS record checks out and is not causing issues elsewhere. It would be nice if ATT would update the Prodigy server that is generating the errors." Others say "resend it" and "it worked on the 3rd try". What gives?
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