Very boring outgoing mail server password problem

I've had this problem from time to time but recently the issue has gotten a lot worse.

At least one in 4 email sends results in the following window opening, I input the password, check 'remember this password in my keychain' and voila... the mail sends....until the next time that is.

Does anyone have a fix or know what's happening.. do I need to speak to my ISP perhaps?

Thanks for looking. I've tried the usual maintenance regime but can't seem to solve it.

When I was getting that a lot way back, it was caused by checking email to fast like ever minute. I set it for 5 minutes and that issue went away.

That might not be your issue though but thought I would mention it.

I've had this problem from time to time but recently the issue has gotten a lot worse.

Click to expand...

I've had the same thing happen to me. I found out if I went direct to my ISP server site and changed the password there and then went back and did the same in my mail account and keychain, the problem was resolved.

Thank you guys for your input..been away from my desk. I'll give it a go tomorrow.

Hello again, just to update I reset the email check to every 15 minutes yesterday and so far so good. No password prompts and crucially no internet freezes either (which I hadn't mentioned). I'll give it another few days and report back.