Host Or Domain Name Not Found Typea. Postfix does not check From address with sender_login_maps. Is missing the corresponding host A DNS record - all messages sent to the domain from multiple ISPs are being returned with this or similar errors.
A host subcomponent consisting of either a registered name including but not limited to a hostname or an IP address. Result of an postconf -n. They are able to send us an email however fine.
A ping to the corresponding address returns.
Cant send mail with Postfix and mutt. Hostname mydomaincouk hostname -f mydomaincouk postconf -n alias_database hashetcaliases alias_maps hashetcaliases broken_sasl_auth_clients yes command_directory usrsbin config_directory etcpostfix. Host or domain name not found. In cPanel when youre on the home page there should be some server stats.