Mail cannot verify server identity on iPad and MacBook Pro
I just started receiving the "cannot verify server identity" message on both my iPad 2 and MacBook Pro. This is happening intermittently and only on my Apple products, not on my Windows computer.
The message I get on the iPad is:
Cannot Verify Server Identity
Mail cannot verify the indentity of "smtpa.midco.net". Would you like to continue anyway?
Cancel
Details
Continue
________________
Usually if I l click Cancel my message gets sent anyway. Today I tried to click Cancel and nothing happened and I couldn't just close out so I clicked Continue.
It appears as if rebooting the iPad corrects the problem for awhile, but then it comes back. Or, that may just be a coincidence because the problem seems intermittent even when I don't reboot.
I called Apple Support for this intermittent problem occurring on the MacBook Pro (because I was in my free support period after having upgraded to Mavericks) and was told the message sounds more scary than it actually is and that I should just click on the option to always trust smtpa.midco.net. That doesn't make a lot of sense to somebody who really only has a rudimentary understanding (if any, really) of what's going on since the message on the MacBook Pro includes the sentence: "You might be connecting to a server that is pretending to be "smtpa.midco.net" which could put your confidential information at risk."
Does anyone have an idea what might be happening here? What to do? Should I try deleting Mail accounts on both Apple products and setting them up again?
I'm kind of freaked out and about to switch back to Windows exclusively if I can't get this figured out.
Also, what are the numbers in parentheses after the version numbers I have posted below?
iPad 2 v. 7.0.3 (11B11)
MacBook Pro
Mavericks OS X 10.9 (13A603)
iPad 2 Wi-Fi, iOS 7.0.3