Craigslist emails not coming through on my server

[Chris Maness]

I try to reset my CL password, but I am not receiving emails and I am
receiving this message in the maillog: "

Jan  3 09:31:54 ns1 sm-mta[81230]: w03HUpaV081230:
mxo2a.craigslist.org [208.82.237.97] did not issue MAIL/EXPN/VRFY/ETRN
during connection to IPv4

"

Not sure if this is a fail or a warning, and it is something I need to
fix or they need to fix.

Any suggestions?

Thanks,
Chris