Question Postfix TLS issue

[USY]

Hi

am running my my Plesk Webserver and my Community behind Cloudflare. CF Origin Certificates are installed on my Webserver and SSL Full (strict) is encryption mode is enabled. The subdomain: mail.mydomain.com is not proxied:

How can I solve that issue ?

Apr  2 22:46:17 srv postfix/smtpd[2733041]: connect from srv.mydomain.com[XXX.XXX.84.94]
Apr  2 22:46:17 srv postfix/smtpd[2733041]: SSL_accept error from srv.mydomain.com[XXX.XXX.84.94]: -1
Apr  2 22:46:17 srv postfix/smtpd[2733041]: warning: TLS library problem: error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown ca:../ssl/record/rec_layer_s3.c:1543:SSL alert number 48:
Apr  2 22:46:17 srv postfix/smtpd[2733041]: lost connection after STARTTLS from srv.mydomain.com[XXX.XXX.84.94]
Apr  2 22:46:17 srv postfix/smtpd[2733041]: disconnect from srv.mydomain.com[XXX.XXX.84.94] ehlo=1 starttls=0/1 commands=1/2
Apr  2 22:46:21 srv plesk_saslauthd[2733179]: select timeout, exiting

 

[Kaspar]

Is de host name of your Plesk server srv.mydomain.com and is it proxied in CF?

 

[USY]

Is de host name of your Plesk server srv.mydomain.com and is it proxied in CF?

Yes

 

[Kaspar]

Yes

There you go. CloudFlare doesn't support email traffic when proxy is enabled.

 

[USY]

There you go. CloudFlare doesn't support email traffic when proxy is enabled.

But doesn't the mail should be sent trough the subdomain: mail.mydomain.com ?
The subdomain srv.mydomain.com is the plesk the Server Full hostname under Plesk Server settings.

 

[Kaspar]

But doesn't the mail should be sent trough the subdomain: mail.mydomain.com ?

Nope. Why should it?

The subdomain srv.mydomain.com is the plesk the Server Full hostname under Plesk Server settings.

The host name for the server gets used for all outgoing mail. And thats the way it should be