The other day, Outlook stopped being able to send email. I did not upgrade any software (McAfee security/firewall/AOL/etc.) nor change any settings knowingly.
While I can receive messages fine in Outlook, I cannot send emails that I personally compose. However, if I go into account settings in Outlook and perform a test send, that works fine. Additionally, if I send emails straight through AOL (either via the web AOL or the fat client version) they go through as well also. So, the problem seems to be localized to when I personally compose the email via Outlook and hit send.
The exact message I receive is:
Sending' reported error (0x800CCC61) : 'Your outgoing (SMTP) e-mail server has reported an internal error. If you continue to receive this message, contact your server administrator or Internet service provider (ISP). The server responded: 521 5.2.1 521 AOL will not accept delivery of this message '
My account settings in Outlook are configured for port 587 and using TLS. This has not changed from when it used to work.
Any help would be appreciated.