From: Bill Cole (postfixlists-070913billmail.scconsult.com)
Date: Tue Mar 18 2008 - 09:27:29 CDT

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At 2:43 PM +0100 3/18/08, Ralf Hildebrandt wrote:
>From my log:
>
>Mar 11 09:48:31 mail postfix/smtpd[30744]: disconnect from
>mail.deber.umusic.com[213.61.130.237]
>Mar 12 10:24:06 mail postfix/smtpd[20576]: connect from
>unknown[213.61.130.237]
>
>I looked at the DNS Records:
># dig -x 213.61.130.237 NS
>;; ANSWER SECTION:
>237.130.61.213.in-addr.arpa. 66346 IN CNAME
>237.224-239.130.61.213.in-addr.arpa.
>
>;; AUTHORITY SECTION:
>224-239.130.61.213.in-addr.arpa. 86400 IN SOA ns.umg-berlin.de.
>hostmaster.ns.umg-berlin.de. 2008010905 10800 3600 604800 86400
>
>
>A CNAME?

See RFC2317: Classless IN-ADDR.ARPA delegation

--
Bill Cole
billscconsult.com

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