All Questions
Tagged with certificate mail.app
8 questions
1
vote
0
answers
52
views
S/MIME certificate not trusted
I actually own a S/MIME certificate for my e-mail address. I got no problem installing it on my Mac, and it perfectly works with Apple Mail (except the encryption icon that is greyed out, but I don't ...
- 11
0
votes
1
answer
1k
views
Apple mail can't verify certificate
I have set up a local mail server on our NAS to backup mails.
For some time now Apple Mail can't verify the certificate.
I found this Apple help post: https://support.apple.com/guide/mail/trust-a-...
- 251
0
votes
1
answer
30
views
Mail.app refuses to send e-mail
I have just upgraded to Monterey (12.0.1 (21A559)), and cannot send e-mails. Mail.app tells me that the certificate is not valid.
We own our own domain and host the primary MX here, and this worked ...
- 21
8
votes
2
answers
18k
views
Apple Mail warning: Unable to verify message signature
After upgrading from Sierra to Mojave (macOS 10.14), Apple mail started to display the warning Unable to verify message signature above all signed and encrypted emails. When clicking on Details, it ...
- 2,050
3
votes
3
answers
4k
views
Re-added certificate leads to unknown authority
Messing around with Keychain Access on macOS Sierra, it seems like I have accidentally deleted trusted root certificates in Keychain Access.
What I did was opening a *.p7s file to add a S/MIME ...
- 133
3
votes
1
answer
18k
views
Removing trusted certificate from Mail in iOS 8
My IMAP (and SMTP) server used a self signed certificate.
Once I marked the certificate as "trusted" in the Mail app, is there a way to remove that trust again?
I tried deleting and re-creating the ...
user94148
3
votes
2
answers
5k
views
How to delete a trusted s/mime certificate for a contact in iOS7
How do I remove a s/mime certificate for a contact in iOS7 mail.app?
I'm using s/mime for two-way encrypted emails with several colleagues. A new colleague tried to install s/mime in Outlook for ...
- 511
0
votes
2
answers
502
views
Is S/MIME in iOS 7 buggy?
I recently imported my S/MIME certificate into iOS 7. I am able to read signed/encrypted message sent from my mac to the iPhone.
BUT
I am UNABLE to send signed / encrypted mails from the iPhone.
...
- 145