Since installing Firefox5 keep getting error message advising me my e mails arent being directly correctly

Question

Error message reads"firfox has detected server is directing messgage insuch a way cannot be completed.

Answer 1

Yeah, I have done all that too.
The second to last time I talked to AT&T, they said they did not have a device type in their computer system and they had to add that in their system. A couple days after they did that, I still had problems. One AT&T rep got an iPhone like mine and set up my e-mail account on that phone and tested it out 10 times by sending e-mail back and forth from phone to computer and etc. He said it worked perfectly fine without any issues. He said to restore phone back to factory settings and that he can tell nothing is wrong with their CWMX.com server as it worked fine for him when he tested out my e-mail account. After I spoke to the rep who did not have problems with the e-mail, I tried sending out e-mail and it would not work. That night, I restored phone back to factory setting as requested. That night after I did that, the e-mail still would not work. The next day, I still had issues. After that, I may have had issues maybe a couple times. Right now as far as I know it seems to be working okay but once I say that, I wonder if I will start having issues again? I wonder if not having my device type in their computer system would cause me all these problems and if so after updating it why did phone still have issues a couple/few days later? I'm sure it wouldn't take that long for it to take in their system if it was the cause.
Since the rep tested out my e-mail account from the city/state where he was located and worked fine, and it didn't for me where I am located.... I am wondering if it has something to do with the area of the local towers?
Nothing makes sense to me... and I have done everything that I possibly know and can. I just hope it continues to work and it stays that way and that I won't start having issues with it again.