I posted just last night that I had an SMTP error message pop-up intermittently, but emails did send. I've just tried now and yet again, NTL is completely blocked: Error pop up on iphone states "Cannot send Mail, the username or password for my address is incorrect" I have option to click OK or go to Settings.
Can anyone help - this now is getting ridiculous; friends with AOL, Sky, BT or Vodafone don't report this problem, can someone help again please I'm working and cannot spend hours in the queue to a helpdesk
I'm no expert but I understand VM now require a separate App password for Mail clients etc. The password is set up in the My Virgin Media site. Your issue could be that.