On 6/23/23 17:13, Christian Kivalo via Postfix-users wrote:
Your lookup key is missing the [ ] you used for the relayhost setting.
This results in no authentication to the dnsexit relay.
This is described in the section "Enabling SASL authentication in the
Postfix SMTP/LMTP client" of the SASL
Hey all. Recently my ISP (Spectrum) decided (after this was working for
me for almost 20 years) to make it impossible for a self hosted domain
to relay through their SMTP server unless it was actually a spectrum.com
email address being used. After going back and forth with them to try
to find
