email problem

Toto Gamez egamez at bonheur.com.ph
Thu Apr 29 02:22:28 UTC 2004


Does this also means that we will received alot of spam mail?

thanks
  ----- Original Message ----- 
  From: Cowles, Steve 
  To: 'General Red Hat Linux discussion list' 
  Sent: Thursday, April 29, 2004 10:01 AM
  Subject: RE: email problem


  > From: Toto Gamez 
  > To: redhat-list at redhat.com
  > Subject: email problem
  > 
  > Hi 
  > We're having problem in receiving e-mail, our pque branch is connected
  > to the internet via myDSL. They are sending email thru smtp.info.com.ph
  > as their smtp and retrieved mail thru our pop3 located in Pasay (postfix)
  > but everytime they send email at our domain (@bonheur.com.ph) we cant
  > received their mails. When I checked the maillog it says:
  > 
  > Apr 27 16:42:21 pasay postfix/smtpd[31895]: warning: 203.131.180.85:
  > hostname adsl-131.180.85.info.com.ph verification failed: Host not found

  [snip...]

  In short, postfix is reporting that the A record and PTR record for the
  connecting IP do not match. Example: Using your log entry above...

  [scowles at voyager log]$ host 203.131.180.85
  85.180.131.203.in-addr.arpa domain name pointer adsl-131.180.85.info.com.ph.

  [scowles at voyager log]$ host adsl-131.180.85.info.com.ph
  Host adsl-131.180.85.info.com.ph not found: 3(NXDOMAIN)

  I'm not a postfix expert by any means, but I had to configure postfix to be
  slightly less restrictive with regards to what postfix considers unknown
  clients. I did so by commenting the following in main.cf

  # reject_unknown_client

  Personally, I don't like commenting the above, but there seems to be a lot
  of IP addresses that do not match A/PTR records from legitimate sources.
  <groan>

  Steve Cowles




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