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This ia a typical reply. &nbsp;An answer without a solution! &nbsp;Solution One is to have your ISP setup rDNS. &nbsp;Solution Two is to disable the reverse DNS lookup in sendmail. &nbsp;For many of us, we are interested in disabling this feature. &nbsp;I understand it is an antispam feature but I want to disable it anyway. <br />
<br />
Be a real tech &amp;&nbsp;tell us how to disable the rDNS lookup!<br />
<br />
Oh! I forgot. &nbsp;PLEASE<br />
<br />
Sorry mom,
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This ia a typical reply.  An answer without a solution!  Solution One is to have your ISP setup rDNS.  Solution Two is to disable the reverse DNS lookup in sendmail.  For many of us, we are interested in disabling this feature.  I understand it is an antispam feature but I want to disable it anyway.

Be a real tech & tell us how to disable the rDNS lookup!

Oh! I forgot.  PLEASE

Sorry mom,

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in my logs i get the following :<br />
<br />
from=&lt;mikea@cas.co.za&gt;, <br />
size=1139, class=0, pri=31139, nrcpts=1, msgid=&lt;01BE38C8.85027CE0@M<wbr />IKE_A.cas&gt;<wbr />, proto=SMTP, relay=MIKE_A.cas [200.1.1.142] (may be forged)<br />
Jan &nbsp;5 16:31:26 linux01 sendmail[15583]: QAA15581: to=&lt;pdb@tissoft.co.uk&gt;, ctlad<br />
dr=&lt;mikea@cas.co.za&gt; (547/547), delay=00:00:01, xdelay=00:00:01, mailer=rel<br />
ay, relay=inetgway.cashbank. [200.1.1.248], stat=Sent (OK)<br />
<br />
The mail does get deliverd, but it seems to me that there is <br />
a problem since it gets relayed back to the user , why ?<br />
and also get the mesg (may be forged) , my guess is that the<br />
PC host name is different from the email user name ,<br />
how do i fix this without having to rename user names ?
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in my logs i get the following :

from=<mikea@cas.co.za>, 
size=1139, class=0, pri=31139, nrcpts=1, msgid=<01BE38C8.85027CE0@MIKE_A.cas>, proto=SMTP, relay=MIKE_A.cas [200.1.1.142] (may be forged)
Jan  5 16:31:26 linux01 sendmail[15583]: QAA15581: to=<pdb@tissoft.co.uk>, ctlad
dr=<mikea@cas.co.za> (547/547), delay=00:00:01, xdelay=00:00:01, mailer=rel
ay, relay=inetgway.cashbank. [200.1.1.248], stat=Sent (OK)

The mail does get deliverd, but it seems to me that there is 
a problem since it gets relayed back to the user , why ?
and also get the mesg (may be forged) , my guess is that the
PC host name is different from the email user name ,
how do i fix this without having to rename user names ?

sendmail log reports (may be forged)

The variety of Linux distributions creates myriad issues relating to configuration and operations when computers are networked, not the least of which is the use of various network management applications, some of which are included with specific distributions, while others are standalone applications.