I have a client that is using godaddy email for their domain. A couple weeks ago, all the office computers lost the ability to send email. They are using Outlook 2013/2016 They tried calling Verizon and GoDaddy. Support on each side basically did all the usual setting changes:
port 465 SSL
port 587 TLS
And then pointed the finger at the other end.
We tried disabling the firewall and AV on the client, and lowering the firewall settings on the Verizon router.
One of the computers is a laptop and the owner can take it home (She has Verizon FIOS at home as well.) and it works there. She comes in to the office and it doesn't work.
I tried to use putty to telnet to smtpout.secureserver.net port 465 and got the error: Network error: Software caused the connection abort
I then tried it on my system since I had never tried to telnet to 465 before and got the same error, so that test didn't tell me anything.
I can ping smtpout.secureserver.net
Can anyone suggest a test that I can do to narrow down where 465 is being blocked?