"Cannot verify server identity" message from mail, iOS 10.2.1

SInce upgrading to iOS 10.2.1, the mail app cannot send mail, returning a certificate error, "cannot verify server identity"

Previously, all I needed do was view the certificate details, then simply select "trust" to accept the certificate. This option is no longer available.

Apple support tried to tell me my provider (Dreamhost) must have changed setting so iOS would no longer allow me to trust their certificates. Really. That's what they said.

Now, imagine generating a server certificate. Then, further imagine setting it (if it were even possible), so that no client could trust and use it. That's what Apple Support suggested to me.

I've seen other complaints on the internets about this behavior with this iOS version.

Does anyone here know how to trust a mail certificate with iOS 10.2.1?

Posted on Jan 29, 2017 11:15 PM

33 replies

May 8, 2017 11:53 PM in response to Boris Y

I just did it:

Remove my account and then adding it, again.

All is fine, now, I don't see a reason to complain.

Cheers -- Chris

May 21, 2017 10:33 AM in response to Jesse Ohlsson

I have the same problem now on my iPad. My iPhone and Mac which have the exact same settings are working just fine as usual.

Sep 19, 2017 6:21 PM in response to Jesse Ohlsson

Hi Jesse, for what it's worth, I have exactly this problem too. Thank you for your detailed responses here - now I at least know what's going on. Absurd.

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"Cannot verify server identity" message from mail, iOS 10.2.1