> From: Toto Gamez > To: redhat-list@xxxxxxxxxx > 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@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@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 -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
