windows live email will receive but will not send; error # 0x800CCC0E

the avast is version 7.

when i switched to comcast they lt me keep the sbc-yahoo account. i never undrstood it either.

Interesting you can continue to use the at&t(sbc) email account after switching to Comcast.
ZoneAlarm (ZA) has a firewall and you found ZA is not working now.
Check what firewall you have running in Control Panel > Action Center.

Just guessing, but I wonder if you have a port(s) blocked because of a ZA problem.

at&t does use Yahoo mail, so while confusing, it should not be a problem.
You can try to sign in to at&t online email and see if your account is ok.
https://cprodx.att.net/commonLogin/i...s&OLDSESSION=1

ok, i will turn off zone alarm. however i had been using it and avast together for quite a while.

i don't understand this:

"at&t does use Yahoo mail, so while confusing, it should not be a problem.
You can try to sign in to at&t online email and see if your account is ok.
https://cprodx.att.net/commonLogin/i...s&OLDSESSION=1"

why would i have an account with attt if it is no longer my isp?

i turned on windows defender

there are thre error messages:

Server Response: .
Server: 'pop.mail.yahoo.com'
Windows Live Mail Error ID: 0x800CCC0F
Protocol: POP3
Port: 110
Secure(SSL): No

Unable to send or receive messages for the Tim Hall account. An unknown error has occurred.

Server: 'pop.mail.yahoo.com'
Windows Live Mail Error ID: 0x800CCC0C
Protocol: POP3
Port: 110
Secure(SSL): No

The connection to the server has failed.

Subject ' Leaflet with address of march 24 action'
Server: 'smtp.att.yahoo.com'
Windows Live Mail Error ID: 0x800CCC0E
Protocol: SMTP
Port: 25
Secure(SSL): Yes
Socket Error: 10060

ok, i conformed my setting to those roderunner suggested. am receiving incoming but still cannot send out. will turn off windows defender firewall right now as i see it was suggested above not to have to avs running at one time.

A firewall is not an Anti Virus.
You do want ONE Firewall running.
Just make sure you do not have Windows Firewall AND ZoneAlarm Firewall running at the same time.