Today I noticed spool dashboard indicating outbound senders not related to our hosted domains. Is there anything we have to configure to restrict outgoing mail apart from our own domain. For example we have domain
Remote spam mail hit our server all above 4 domains and subsequently deleted from above 30 spam weight. However the log indicate, the remote mail get notice back to remote server and confirm deliver report with same reported domain name.
I have attached log file and changed my own domain as domain1 domain2 domain3 & domain4
Please review log and let me know your solution.
Is there any concept related to read receipt the above scenario because origin mail and delivery mail same
Suspect remote mail delivery line
Delivery for firstname.lastname@example.org to email@example.com has completed
Delivery for firstname.lastname@example.org to email@example.com has completed (Delivered)