Hi Tiffany,
I've been busy doing research. I converted both my POP accounts to IMAP, which didn't help. I also set up a Gmail account as a backup, and am able to both send and receive e-mails using this client. Unfortunately, I am still unable to send e-mails from either Mac Mail or Outlook 2011 on my Mac Mini. Here's a copy of my smtp.cox.net activity log from today:
INITIATING CONNECTION Jun 21 11:18:15.511 host:smtp.cox.net -- port:465 -- socket:0x0 -- thread:0x7f8d13a89cc0
CONNECTED Jun 21 11:18:15.665 [kCFStreamSocketSecurityLevelTLSv1_0] -- host:smtp.cox.net -- port:465 -- socket:0x7f8d13c10c90 -- thread:0x7f8d13a89cc0
READ Jun 21 11:18:15.665 [kCFStreamSocketSecurityLevelTLSv1_0] -- host:smtp.cox.net -- port:465 -- socket:0x7f8d13c10c90 -- thread:0x7f8d13a89cc0
554 fed1rmimpo210.cox.net cox connection refused from 68.6.118.7
WROTE Jun 21 11:18:15.678 [kCFStreamSocketSecurityLevelTLSv1_0] -- host:smtp.cox.net -- port:465 -- socket:0x7f8d13c10c90 -- thread:0x7f8d13a89cc0
EHLO [192.168.0.2]
READ Jun 21 11:18:15.694 [kCFStreamSocketSecurityLevelTLSv1_0] -- host:smtp.cox.net -- port:465 -- socket:0x7f8d13c10c90 -- thread:0x7f8d13a89cc0
503 not available
Perhaps this info will be helpful. I've also attached a photo that displays my current SMTP settings for both of my mail clients. I'm pretty sure I've set everything correctly. Really hope you can figure this out; it's been three weeks now of not being able to send mail using either of my desktop e-mail clients. Fortunately I can send mail using Cox's webmail, and now also using Gmail, but I much prefer to be able to use my desktop e-mail clients.
Thanks, David
P.S. Sorry for the blurred image; I think it's clear enough to make out the settings I've set.
