Chris B wrote:


> The following setting in my main.conf is wrong:
> relayhost = SMTP:[mail.asciiking.com]:2025

The correct syntax is:

relayhost = mail.asciiking.com:2025 (if you want to use MX and "A" DNS records for mail.asciiking.com)

relayhost = [mail.asciiking.com]:2025 (if you want to use only "A" DNS records for mail.asciiking.com)


In modern versions of Postfix, you can leave the relayhost unset, and specify
the default relayhost at the very end of your "transport" file, such as:

* smtp:[mail.asciiking.com]:2025


Note: Case is significant. It must be "smtp" and not "SMTP".

--
Greg