Dear Markus Falb Thanks for your response, it is grate information. it is true i missed the part of your mails. Thanks / Regards > On 12.4.2012 14:16, Prabhpal S. Mavi wrote: > ... >> i know these commands but if you will carefully look into logs, you will >> notice that my server is sending mail not receiving. therefor it has >> nothing to do with their PTR weather it is correct or in correct. that >> is >> according to the logic. > ... > > If the receiving server is doing callback than the logic is reversed, so > no, at that point your server turns into the receiver. > please read my *whole* message again, not only the part with the > commands. Have a look at the links I provided. > -- > Kind Regards, Markus Falb > Resident do not top post guerilla > http://centos.org/modules/tinycontent/index.php?id=16 > (The guidelines part) > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > Thanks / Regards Prabhpal S. Mavi