The server shows the 220 SMTP greeting and other numeric codes when you send SMTP commands such a HELO. telnet 25 won't see the HELO
Len
Hmmm... from my *nix box:
mail# telnet 10.34.129.12 25 Trying 10.34.129.12... Connected to imail.reilcorp.com. Escape character is '^]'. 220 massat.net Hello Mailserver! X1 helo test 250 hello massat.net
that's not the EHLO/HELO command, it's (optional) text behind the 250 response code.
220 plus what I set in SMTP Advanced, Hello Message. So, what exactly am I missing or not seeing???
telnet to any non Imail machine and see if responds to your helo with "250 helo/ehlo"
mx1# telnet mgw1.meiway.com 25 Trying 81.255.84.75... Connected to mgw1.meiway.com. Escape character is '^]'. 220 mgw1.meiway.com - ESMTP - Postfix - Attn: UCE trespassers will be pursued. helo this is len 250 mgw1.meiway.com
... no "helo" in the 250 line
So sending a helo/ehlo command and checking the "2xx text" is simply not a reliable way of seeing what that IP would actually send as its HELO hostname, and is certainly not the basis for any policy decisions.
Len
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