From: (no name) (no email)
Date: Thu Feb 26 2004 - 01:28:24 EST
in my maillog, it shows:
Feb 25 03:48:35 mail postfix/smtpd[3174]: warning: 65.212.231.150: hostname host150.strachanagencey.com verification failed: Host not found
Feb 25 03:48:35 mail postfix/smtpd[3174]: connect from unknown[65.212.231.150]
Feb 25 03:48:36 mail postfix/smtpd[3174]: 6B815FEB7E: client=unknown[65.212.231.150]
Feb 25 03:48:37 mail postfix/smtpd[3174]: 6B815FEB7E: reject_warning: RCPT from unknown[65.212.231.150]: 450 Client host rejected: cannot findyour hostname, [65.212.231.150]; from=<> to=<> proto=ESMTP helo=<wanhaiusa.com>
Feb 25 03:48:40 mail postfix/smtpd[3174]: disconnect from unknown[65.212.231.150]
I found strang entry in a result of dig :
# dig -x 65.212.231.150|grep -v ";"|sed -e '/^$/d'
150.231.212.65.in-addr.arpa. 21600 IN CNAME
150.128.231.212.65.in-addr.arpa.
150.128.231.212.65.in-addr.arpa. 21600 IN PTR
host150.strachanagencey.com.
128.231.212.65.in-addr.arpa. 21600 IN NS auth111.ns.uu.net.
128.231.212.65.in-addr.arpa. 21600 IN NS auth120.ns.uu.net.
auth111.ns.uu.net. 432 IN A 198.6.1.115
auth120.ns.uu.net. 3091 IN A 198.6.1.154
host150.strachanagencey.com doesn't seem to exist,
and the CNAME record pointed to 150.128.231.212.65.in-addr.arpa, it looks like IPv5
if the DNS configure is wrong, how do the sender send email through this strange IP to internet?
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