View Single Post
  #4  
Old 18th May 2009, 18:01
mr_bo mr_bo is offline
Member
 
Join Date: Sep 2008
Posts: 35
Thanks: 7
Thanked 0 Times in 0 Posts
Default Email/DNS problem

Will carry on with this thread and hoping someone can help with an e-mail problem where some are getting through and some are not.

The ones not getting through show this error:-

Code:
The reason for the problem:
4.1.2 - Bad destination host 'DNS Soft Error looking up tld.com (MX) while asking recursive_nameserver0.parent. Error was: unable to reach nameserver on any valid IP'
DNS check shows all ok:-

Code:
CheckDNS.NET is testing tld.com 


CheckDNS.NET is asking root servers about authoritative NS for domain 
  Got DNS list for 'tld.com' from K.GTLD-SERVERS.NET 
  Found NS record: ns1.xxx.co.uk[xx.xx.xxx.xxx], was resolved to IP address by NS6.NIC.uk  
  Found NS record: ns2.xxx.co.uk[xx.xx.xxx.xxx], was resolved to IP address by NS6.NIC.uk  
  Domain has 2 DNS server(s)  

CheckDNS.NET is verifying if NS are alive 
  DNS server ns1.xxx.co.uk[xx.xx.xxx.xxx] is alive and authoritative for domain tld.com  
  DNS server ns2.xxx.co.uk[xx.xx.xxx.xxx] is alive and authoritative for domain tld.com  
  2 server(s) are alive  

CheckDNS.NET checks if all NS have the same version 
  All 2 your servers have the same zone version 2009051802  

CheckDNS.NET verifies www servers 
  Checking HTTP server www.tld.com [xx.xx.xxx.xxx]  
  HTTP server www.tld.com[xx.xx.xxx.xxx] answers on port 80  
  Received: HTTP/1.1 200 OK (Server: Apache/2.2.3 (CentOS)) . . Welcome!. . . . . . . Welcome to . your website!. . . . . . For questions or problems please contact . support. .. . . . Powered by . ISPConfig. . .  

CheckDNS.NET tests mail-servers 
  Domain tld.com has only one mail-server  
  Checking mail server (PRI=10) mail.tld.com [xx.xx.xxx.xxx]  
  Mail server mail.tld.com[xx.xx.xxx.xxx] answers on port 25  
  <<< 220 server2.xxx.co.uk ESMTP Postfix 
  >>> HELO www.checkdns.net 
  <<< 250 server2.xxx.co.uk 
  >>> MAIL FROM: <dnscheck@uniplace.com> 
  <<< 250 2.1.0 Ok 
  >>> RCPT TO: <postmaster@tld.com> 
  <<< 250 2.1.5 Ok 
  >>> QUIT 
  Mail server mail.tld.com [xx.xx.xxx.xxx] accepts mail for tld.com  
  All MX are configured properly
Not on any blacklist and didn't have this trouble using ubuntu/ispc2

Any ideas?

Thanks in advance.
Reply With Quote