Snappymail in Nextcloud - Cannot enable STARTTLS

[kuchenmann]

Trying to use Snappymail in Nextcloud.
Receiving of mails is OK, but sending does not work.
Getting error "Can't send message. Cannot enable STARTTLS".
Looking into /var/log/mail.log shows that Snappymail tries with anonymous.
But I had to login with my account before I could use the Snappymail WebGUI.
There is not much to configure in Snappymail.

Feb 8 10:04:27 mycloud postfix/smtpd[9357]: Anonymous TLS connection established from localhost[::1]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 Feb 8 10:04:27 mycloud postfix/smtpd[9357]: lost connection after STARTTLS from localhost[::1] Feb 8 10:04:27 mycloud postfix/smtpd[9357]: disconnect from localhost[::1] ehlo=1 starttls=1 commands=2 Feb 8 10:08:20 mycloud postfix/smtpd[9432]: connect from localhost[::1] Feb 8 10:08:20 mycloud postfix/smtpd[9432]: Anonymous TLS connection established from localhost[::1]: TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256 Feb 8 10:08:20 mycloud postfix/smtpd[9432]: lost connection after STARTTLS from localhost[::1] Feb 8 10:08:20 mycloud postfix/smtpd[9432]: disconnect from localhost[::1] ehlo=1 starttls=1 commands=2

[kuchenmann]

Using old mail app now -> works!