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#45856 - 07/28/17 09:47 AM Mail can't verify the identity of imap
deniro Offline


Registered: 09/09/09
"Mail can't verify the identity of imap.mail.att.net. The certificate for the server is invalid"

I clicked "Show Certificate" and checked the box "Always trust" (despite my misgivings) but the next time I tried to retrieve my mail, I had to go through the whole process again.

I spent an hour on the phone with ATT yesterday and he couldn't figure it out. I spent much more time on Google, trying suggestions, but I haven't had much success either.

I started with the obvious, deleting preferences, mailboxes, accounts, passwords, and certificates, and the usual maintenance checks. I even tried downloading a free SSL certificate from Commodo but I don't think it worked because I can't tell if it downloaded.
_________________________
OS X 10.11.6
iMac 21.5", Mid 2011
2.8 GHz Intel Core i7, 24 GB
AMD Radeon HD 6770M
Using Apple computers since 1980

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#45879 - 07/31/17 10:08 AM Re: Mail can't verify the identity of imap [Re: deniro]
Ira L Offline


Registered: 08/13/09
Loc: California
I too saw that message for an att.net account I have. I checked "Always Trust" and, for what it's worth, the message has not shown up again.

What couldn't the AT&T rep figure out? That AT&T forgot to renew its certificate in a timely manner? Why your "Always trust" did not stick is another issue.
_________________________
On a Mac since 1984.
Currently: 27" iMacs, Macbook Air, macOS 10.14.x,; iPhones, iPods and iPads galore!

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#45899 - 08/01/17 04:22 PM Re: Mail can't verify the identity of imap [Re: Ira L]
deniro Offline


Registered: 09/09/09
That's the problem. I can get the mail now but my changes don't stick. Every time I start Mail I have to do the certificate dance.
_________________________
OS X 10.11.6
iMac 21.5", Mid 2011
2.8 GHz Intel Core i7, 24 GB
AMD Radeon HD 6770M
Using Apple computers since 1980

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#45906 - 08/02/17 02:45 PM Re: Mail can't verify the identity of imap [Re: deniro]
Virtual1 Offline


Registered: 08/04/09
Loc: Iowa
I don't have that issue, but you may find you need to copy the certificate into the System keychain, using Keychain Utility. Also use that tool to carefully examine the certificate - errors in certificates are somewhat common and will cause unpredictable behavior by apps that try to use them. Silly things like calling it "att.com" one place and "www.att.com" in another place. Compare the certificate carefully with another similar one and see if any of the settings, trust levels, roles, or privileges are different.
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I work for the Department of Redundancy Department

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