Outlook and Apple Mail Access

@XfinityJamesC​ Thank you very much for your quick reply.  I tried turning 3rd party access on and off several times and it did not help.  When connecting on my Iphone I get the message

 "The mail server "mail.comcast.net" is not responding.  Verify that you have entered the correct account info in Mail settings.  I can still send mail but not receive.  In outlook I get a message stating the the IP address has been temporarily "black listed", but it let's me send mail but not receive.  It's unlikely that this is coincidental.  I think it's at the mail server.  Also, in the past, I was always able to talk to an agent and resolve problems.  Now I'm looked out.  I depend on my Comcast email address for my business.  I really need someone to check the account and talk to a human.  I was loyal Comcast customer for 17 years before we moved to an area where service was not available.  Thank you in advance for anything you can do.

Thank you for checking those settings. The blacklisted IP address alert makes things interesting. I know that Outlook recently changed their security protocols, causing some older configurations to stop working. Are you connecting through a VPN, by any chance, or do you have the option to connect through a VPN, to see if a different IP address triggers the same alert?

Hello again and thank you.  I connected to my Verizon personal hot-spot on my Iphone and turned off WiFi on the Iphone by-passing my WiFi network and connecting thru the Verizon cellular network.  I was then able to connect and download email on both the PC and the Iphone. I tried giving the PC a new IP address (static lease) and could not connect; same issue both devices.  I have no issues with any other of my other email systems.  Comcast must not like the IP address the Cox modem assigned to the router which assigns to all the connected devices.  I've rebooted both and no change.  I wish someone would look at my account and see if there is a block on the incoming IP address.