Hi All,
I'm running Postfix in conjunction with a Policy Daemon and i've started noticing that the large majority of Spam that hits our borders do NOT speak ESMTP.
Has anyone else noticed this? The reason why i'm asking here is because using the Policy Daemon, i'm able to inject a X-Header field which states whether the remote/ connecting host talks ESMTP or straight SMTP and can then ofcourse get SpamAssassin to score highly on this.
Can anyone either confirm or deny this? (perhaps looking/digging through their spam/ham corpus?)
Regards, Cami
