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<DIV><FONT face=Arial size=2>Does this also means that we will received alot of
spam mail?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>thanks</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=steve@stevecowles.com href="mailto:steve@stevecowles.com">Cowles,
Steve</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=redhat-list@redhat.com
href="mailto:redhat-list@redhat.com">'General Red Hat Linux discussion
list'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, April 29, 2004 10:01
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: email problem</DIV>
<DIV><BR></DIV>> From: Toto Gamez <BR>> To: <A
href="mailto:redhat-list@redhat.com">redhat-list@redhat.com</A><BR>>
Subject: email problem<BR>> <BR>> Hi <BR>> We're having problem in
receiving e-mail, our pque branch is connected<BR>> to the internet via
myDSL. They are sending email thru smtp.info.com.ph<BR>> as their smtp and
retrieved mail thru our pop3 located in Pasay (postfix)<BR>> but everytime
they send email at our domain (@bonheur.com.ph) we cant<BR>> received their
mails. When I checked the maillog it says:<BR>> <BR>> Apr 27 16:42:21
pasay postfix/smtpd[31895]: warning: 203.131.180.85:<BR>> hostname
adsl-131.180.85.info.com.ph verification failed: Host not
found<BR><BR>[snip...]<BR><BR>In short, postfix is reporting that the A record
and PTR record for the<BR>connecting IP do not match. Example: Using your log
entry above...<BR><BR>[scowles@voyager log]$ host
203.131.180.85<BR>85.180.131.203.in-addr.arpa domain name pointer
adsl-131.180.85.info.com.ph.<BR><BR>[scowles@voyager log]$ host
adsl-131.180.85.info.com.ph<BR>Host adsl-131.180.85.info.com.ph not found:
3(NXDOMAIN)<BR><BR>I'm not a postfix expert by any means, but I had to
configure postfix to be<BR>slightly less restrictive with regards to what
postfix considers unknown<BR>clients. I did so by commenting the following in
main.cf<BR><BR># reject_unknown_client<BR><BR>Personally, I don't like
commenting the above, but there seems to be a lot<BR>of IP addresses that do
not match A/PTR records from legitimate sources.<BR><groan><BR><BR>Steve
Cowles<BR><BR><BR><BR></BLOCKQUOTE></BODY></HTML>