Re: cannot get IOS or MacOSX to connect to dovecot:995 since upgraded Mac or iPhone

On 31/03/2026 09:33, Bill Scheding via dovecot wrote:
> They install OK, dovecot starts; but iPhone and mac cannot connect to pop3
>
> Cannot get my iPhone or Mac to accept new certs from lets encrypt, et. al.
>
> This is a new problem, started recently.
>
> My existing cert expired in 2016

Hi William.

Over the years Apple (and other companies) have implemented more 
restrictive constraints on certificates in the name of security.

A good starting point for creating certificates that Apple devices will 
accept is: https://support.apple.com/en-us/103769

If you are using certificates issued by your own CA, you'll also need to 
(a) import the CA cert into your devices, and (b) enable them in 
Certificate Trust Settings, before the device will accept the cert. (You 
shouldn't need to do anything special for certificates issued by Let's 
Encrypt.)

Hope that helps.

Nick.

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