jepler at unpythonic.net
Thu Sep 9 15:21:58 CEST 2004
I feel compelled to point out that having the IP address in the (250)
response to HELO is not a requirement, and the example I found in
RFC821 didn't have it (and neither did the EHLO examples in 2821):
R: 220 BBN-UNIX.ARPA Simple Mail Transfer Service Ready
S: HELO USC-ISIF.ARPA
R: 250 BBN-UNIX.ARPA
That said, this is a pretty cute idea given that a generous fraction of
SMTP servers do seem to include the IP address in the response to HELO.
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