I am having the same issue. There have been no changes in any configuration or settings. I have 3 email accounts set up in Apple Mail that have worked perfectly on all my devices. As of this morning, the mail accounts still work on my MBP, the iPhone, and the iPad -- but they are no longer working on my Mac Mini.
The email account configurations are consistent.
The computers are running 10.8.2
The mobile devices are running iOS 6
This is very strange and I appreciate any assistance or ideas!!!!!
Confused is right.
I actually called Apple support and was on the phone with them for an entire day, the case became known throughout the senior office that my call was constantly passed around apparently.
They took some details of my Mac and said they would get back to me a week or so after. I never did hear from them again, but Mail suddenly started working again about a week later. Though it was only a week, it seemed a lot, LOT longer for me having around 6000 unread business emails come through afterwards that I had to face responding to.
Obviously a major inconvenience but I think the only remedy for this problem was time. It's annoying how there is no solid solution though, because I am constantly frightened it may reoccur in the future!
Good luck guys, hope it sorts itself out like it did for me
When this happened to me (see above), I thought I tried everything and it was a complete mystery until I checked the Activity window (Mail>Window>Activity). For each non-working account, there was an activity (I think it was send mail) that was hanging. I pressed the stop sign to halt each activity, and after that, email was flowing again in every account. I haven't had any problems since.
Now I can't explain what was causing the send mail to hang...whether it was on my end or maybe my ISP, but manually stopping the activity was what got it working again.
Same problem here and have had it off and on for some time. Also went on the phone with apple support and over 4 hours later no real answer. My computer started becoming extremely funky and all kinds of weird stuff happening once they were helping me work through it. I shut down, started back up and everything was fine. Problem is they had me pull off all my preferences and all my past emails that were backed up. Great! Now I have no client history to speak of. I have tried putting them back in their place but can't seem to find where all this stuff goes.
Thanks to tchotche. His method seemed to help a bit.