Morning all
Last week, I found I was unable to send to a Verizon customer. I was getting
"550 You are not allowed to send mail:sv5pub.verizon.net"
I submitted our mail server IP address to see if we were blacklised and got a
reply back that we were not.
I then switched to using a Charter SMPT server and got a similar response.
I next tried using remote access, web mail on the our Imail server so there
would be no record of a dynamic IP address in the header and sent another
message.
It timed out this morning with "421 SMTP service not available, closing
transmission channel" and terminating after the Imail max tries timed out.
Does anyone have any thoughts, as we speak, none of our customers are now able
to email anyone at Verizon.
Thanks for any help.
John
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