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require_rdns sendmail hack
Posted by - NA - on May 19 2010 12:41 PM
Hack file to be placed in /usr/share/sendmail-cf/hack/ of a Sendmail email server to reject email sent from systems without a PTR. Call the file in Sendmail through the following line in sendmail.mc then recompile:
HACK(`require_rdns')dnl
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