too much spam is being generated by 1 id in a the network. the id is not present in our domain. the thing is all relays have been stopped by us except by mail server. we even tested by shutting down our mail server. the email doesn't contain any ip address ( not shown in log viewer) .. all rules written on firewall to drop emai from that id or subejct line doesn't stop the mail from going through.. switching from mta to legacy or legacy to mta doesn't help. the emails keep on going. l1 snd l2 support has been futile till now. community help all that can save me now.
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