why doesn't mail work with Att Yahoo servers?

Thanks for rsponding.

This week the mail is coming in but not going out. The small business settings don't work for my email.

On my G5 the current POP account settings are:

inbound___mail.bellsouth.net port 110 SSL with authentication

outbound__mail.bellsouth.net port 25 SSL with authentication

one discussion with ATT-Yahoo had me change to:

inbound.att.net port 995 SSL with authentication

outbound.att.net port 465 SSL with authentication

but it never worked and then they went to saying there is a problem with my computer....blah blah

The one change this week has been the addition of Uverse. They claim that makes no difference.

My other computer running OS 10.8x would do nothing until I threw out all my accounts and used the automated sign up to reinstall them. Somedays the server will not recognise the passwords maybe six time in a day but after I resend password it hooks up. I never know when I get up if it's going to be working. Sometimes even when I goto the web mail I have to fill out those security fields just to log in.

Anything else I can add?

Thank you for trying. None of these made any difference. I spent more time with ATT and they have left it they won't do anymore and that I must hire their 3rd party consultant at $50 to communicate online.

So i decided to spend $50 and buy OS 10.5 that has an upgraded mail program. If that doesn't work I'll dump ATT and get my mail elsewhere.

Thanks for everyones help.

Thanks to all whom replyed to my query. I have spent more time with ATT and I hired a local computer guy to help. Using you alls info and my high priced friend the email works most of the day. I have found a couple things... some say the servers are IMAP and some say they are POP. What I have had to do is have both set ups available to me to use to get and send mail. Right now the POP is working best.

ATT will tell you either, depending on the fool you talk to. The last guy said only POP will work. The guy befoe said they were IMAP. They also like to send people to their 3rd party tech people. Unfortunately they don't know anything about macs and they won't tell you that until after you pay them. What the final say from ATT is that they only guarantee that you can get you mail via web-mail and will do little to nothing to help you othet than what is correographed on their computer screen. If that doesn't help thay basicly say tuff luck. My suggestion to all is find someone else other than ATT OR IT'S SUBS.

Currently 2 of my three bellsouth.net emails address work a couple days at a time. One only works for 15 minutes. To get it to work you can open the Connection Doctor and run it usually once and the email will begin working again. You can access it (OS 10.8.4) by clicking on the little "triangle with exclaimation point" that comes up next to you email box name. I leave open all day to make it easier to access. It also makes the G5 work at the same time. Nor because they are connected but because the problem is with Yahoo-ATT.

Current POP settings are:

inbound.att.net port 110 with SSL and password authentication

outbound.att.net port 465 with SSL and password authentication on two of the emails

On one of the emails I have a GoDaddy web account that uses:

pop.secureserver.net default port selection with SSL and password authentication

for the out going mail server which works for the bellsouth email. Seems like it shouldn't but it does.

I also keep the IMAP settings as noted by "goodmanrc" as sometimes it works.

Incoming Mail Server

Host Name pop.att.yahoo.com

Use SSL ON

Authentication Password

Port 995

Outgoing Mail Server

Host Name smtp.att.yahoo.com

Use SSL OFF

Authentication Password

Port 25

The settings as noted by Andrew99 use to work before I got Uverse. Now they no longer work. At least not this week.

Thanks again to all.