Suddenly can't send email to certain known recipients using Outloo

S

shereenflynn

For the past week, I have been unable to send email using Outlook to many of
my known email contacts. I can go on Charter's webpage, access my account
there, and send just fine. I spent an hour on the phone with Charter trying
to check configuration, etc, and it is all correct. They say it is a
Microsoft problem and say this is specifically why Charter generally no
longer gives any email support for Outlook.
I disabled antivirus email scanning, no effect.
I made sure Port 25 was allowed, then finally turned off the firewall
altogether with no result.
The specific error I am getting is this:

The message could not be sent because one of the recipients was rejected by
the server. The rejected e-mail address was
'(e-mail address removed)'. Subject 'test', Account:
'mail.charter.net', Server: 'mail.charter.net', Protocol: SMTP, Server
Response: '550 #5.1.0 Address rejected.', Port: 25, Secure(SSL): No, Server
Error: 550, Error Number: 0x800CCC79

This has been a huge waste of time and I am pulling my hair out. Any
suggestions are greatly appreciated. Thank you.
 
S

shereenflynn

Definitely not. I can't send messages to ANYONE (and I have tried over 20
addresses, including a yahoo account of mine) unless it has a charter.net
suffix.
 

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