Apple Event: May 7th at 7 am PT

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

15 points

Unable to send mail using MobileMe after upgrading

Since upgrading to Lion I can no longer send an email using my MobileMe account from my MacBook Air (11"). Mail spins aways for several minutes trying to send the message before finally displaying a pop up that the mail couldn't be sent using a standard port. This worked fine in Snow Leopard.

Sending from my upgraded iMac on the same MobileMe account works fine. What is particularly odd is that I have the mail accounts set to sync across the machines using MobileMe. So the settings are identical. Both machines are connected to the same router (Airport Extreme). The iMac via Ethernet and the MacBook Air via Wifi.

When I run Mail's Connection Doctor it says Connection and login to the server succeeded. Yet of course it can't connect to send mail. I can receive MobileMe mail just fine.

Any ideas how to resolve this?

iMac i5 27", 8GB RAM, Mac OS X (10.6.5), also 11" MacBook Air, iPhone 4G,Mac Mini 2.26GHz, 2x Apple TV

Posted on Jul 23, 2011 6:19 AM

47 replies

Feb 13, 2012 11:36 PM in response to PRP_53

Thanks, this did the trick for me too.

Apr 10, 2012 1:28 PM in response to timyu

"timyu

Re: Unable to send mail using MobileMe after upgrading

Jul 30, 2011 3:34 PM (in response to FAK_) Aha. In the right hand corner of the "new message" mail window there are two small icons, one for encrypting messages, the other for digitally signing messages. If you have not set up digital signing (downloaded a certificate and installed it in your keychain), both of these icons should be visible, but grayed out. If you have set it up, the "digital signing" icon will become available. If you have set it up, AND you are sending your email to someone who has provided you with their public key, then the "encrypted" setting should be available also."

So simple... must have inadvertantly clicked that little digital signing icon on the email! Thanks for your help on this!

Unable to send mail using MobileMe after upgrading