Check your popmail settings. Your provider will change these without notifying you and you won’t be able to download emails. They would have their latest settings on their website. Just compare them to yours.
Such as this? I found it by googling.
Duff 8/31/2008 12:38 PM PST
Comcast just started blocking me on port 25 on August 35, 2008. They want
the port changed to port 587, which works fine when sending mail from
comcast.net ONLY. They now block port 25 and port 587 when using any other
email mail server other than their own.
This is a new policy implemented by comcast and comes out the same week that
they have started limiting bandwidth of their heavy users.
I talked to comcast and we walked through the settings....but he sounded like he was from India so I’ll just check to make sure....thanks...