On Tue, Feb 21, 2006, Stephane Bortzmeyer wrote:
Does any other persons use a test on the validity of the MX record of
the sending domain? Not just that there is a MX but also that it is
not a RFC 1918 address or a loopback address?
sendmail X supports that:
mxbadip:127.0.0.1 error:551 5.7.1 Bad IP address 127.0.0.1 in MX/A list
mxbadip:192.168.255.255 error:551 5.7.1 Bad IP address 192.168.255.255 in MX/A
list
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