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Old 07-04-2005, 10:57 PM   #1
Registered: Jun 2005
Distribution: debian, ubuntu, redhat,knoppix
Posts: 194

Rep: Reputation: 31
can't receive email but ok to send?

I just setup my new email server within a LAN(ie. new mail server is one of the host in LAN). I can use the computer with new mail server (which happen to be postfix server) to email to other computer successfully but can't receive email from others. WHenevre i send email from other computer , i got the folllowing message:


This is the Postfix program at host *******.*****

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can delete your own text from the message returned below.

The Postfix program

<>: Name service error for Host not found

IS it my DNS setting wrong ? Can anyone advice me what should i do?

Thanks in advance!!


Last edited by taiwf; 07-04-2005 at 11:58 PM.
Old 07-05-2005, 04:10 AM   #2
Registered: May 2004
Location: Karlsruhe, Germany
Distribution: debian, gentoo, os x (darwin), ubuntu
Posts: 940

Rep: Reputation: 33
<>: Name service error for Host not found

can you ping the from the server? or run an nslookup on that domain name?
Old 07-05-2005, 05:27 PM   #3
Registered: Jun 2005
Distribution: debian, ubuntu, redhat,knoppix
Posts: 194

Original Poster
Rep: Reputation: 31
Yes , i can ping the host name of the "new server" but soemhow my gateway server can't ping that host name. I got host not found for ping it. I have tried to put the nameserver of LAN1 (which is external ip address) onto newserver resolv.conf, but nothing work. Also , i tried to cp /etc/resolv.conf /var/spoolpostfox/etc but no luck still. The postfix faq bring me no light either(under section "postfix within intranet") --

basically , my network configuration is like below:

|| LAN1 (gateway server) ||
|| ||
|| || =====> Internet.
|| ---------------------- ||
|| | New server | ||
|| ---------------------- ||

**gateway server got its own firewall & email servers , etc and is connect to isp

when nslookup the host.domain name, i got:


#** server can't find NXDOMAIN

Last edited by taiwf; 12-25-2007 at 12:05 AM.


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