Their server bounces his messages with this error:
550 5.7.1 Connections not accepted from servers without a valid sender
domain.flph840 Fix reverse DNS for 66.171.0.45
But I sent a test message to his intended recipient and my test message
was received.
Our DNS has been "as is" for a very long time and we're not getting any
rDNS errors from any others.
On 8/1/24 2:31 PM, Marcel Becker via mailop wrote:
On Thu, Aug 1, 2024 at 12:02 PM Mike McTee via mailop
<mailop@mailop.org> wrote:
We're getting an odd response for one of our customers when they
try to email someone @sbcglobal.net <http://sbcglobal.net>.
Please email me directly if you have insight to that domain and
can assist.
That's AT&T. And what is the "odd response"?
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