Mail suddenly stopped retrieving from my email provider...

Strange it would just stop like that? If you've repaired permissions, I'd suggest the obvious first... go into Mail/preference/accounts/account information and make sure the "enable this account" box is checked.

My ATT uverse changed from POP to IMAP and that also made my Mail stop coming... I had to change my Accts settings. Hope this helps.

im having the SAME exact problem (stopped working last night) and we're hosted thru networksolutions as well, however, my iMac at home also has ML installed and doesnt have this issue - but spent 2.5 hours on the phone with apple tech support this morning, they suggested (after all steps didnt work) to do a re-install of ML which i've yet to do yet (as i have just too much work to do)

interesting to see its happening to someone else though

yeah, i'm assuming u know how? restart and hold either OPTION down or cmd + R (i think) and then it might ask u to re-sign in to app store and it will download it

i was going to do it but for whatever reason it wanted me to download over wireless (was gonna take 4 hours) so i was going to do it last thing b4 i left the office today, curious to know if it fixes it for you

I, too, have a similar problem. I can send mail with all 3 email accounts (me.com and 2 pop accts.). But on my business pop acount I can't receive mail. I can receive it on my phone and iPad but but not on my iMac. I thought that settings might have gotten changed somehow during the upgrade to ML so I copied the exact settings from my iPhone but to no avail. Sure would like to see some sort of resolution of this.

I'm having the same issue with a network solutions account on ML. My iPhone and iPad are recieving mail fine but no luck on my Air.

Same issue, email was working fine yesterday, but now I can't access it from my Mac mail. Have network solutions account but don't have ML.

Network solutions, OSX Lion (installed a month ago). Mail for network solutions pop account will not retrieve messages as of 6:00 a.m. or so this morning. This is my business email and the mac is my business computer, this is a very serious issue that needs to be resolved. Comcast pop, and .me and gmail imap seem fine. Reinstalling lion seems a severe step, and it appears that this is an issue cropping up at the same time for the people posting in this group.

up 2 u dude, i think i might ride it out to see how long this NS problem goes on for, while i dont think reinstalling ML can do any harm, might not be worth doing so anyway

Try to change your user name for account from "username" to "username@domain.com".

At least it helped for all my gmail accounts.

I too am having this SAME exact problem, starting the evening of Aug 6. I was on the phone with Apple support and I recreated my account settings but to no avail. I can download NW Solutions ok to iphone but not my computer. I tried calling NW Solutions several times and now just get a busy signal or am automatically hung up. Ug.