On 10.08.2017 14:57, Alef Veld wrote: > I generated a new certificate for dovecot, and ever since I have this > weird problem that my iPhone can still receive mail but cannot send > using that mailserver. Same for my iMac.
Mail is not sent through Dovecot, but through an MTA. Based on your earlier messages I assume that's Postfix, and you should ask on the Postfix mailing list. See http://www.postfix.org/DEBUG_README.html if you want to receive an answer, folks on that ML tend to reply RTFM otherwise. > I'm wondering if there is any cache for a certificate or something Apple Mail uses certificates from the macOS keychain. If you accept a certificate, it will be stored there. -Ralph
