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Old 18th May 2009, 19:01
mr_bo mr_bo is offline
Join Date: Sep 2008
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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:-

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

CheckDNS.NET is testing 

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

CheckDNS.NET is verifying if NS are alive 
  DNS server[] is alive and authoritative for domain  
  DNS server[] is alive and authoritative for domain  
  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 []  
  HTTP server[] 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 has only one mail-server  
  Checking mail server (PRI=10) []  
  Mail server[] answers on port 25  
  <<< 220 ESMTP Postfix 
  >>> HELO 
  <<< 250 
  >>> MAIL FROM: <> 
  <<< 250 2.1.0 Ok 
  >>> RCPT TO: <> 
  <<< 250 2.1.5 Ok 
  >>> QUIT 
  Mail server [] accepts mail for  
  All MX are configured properly
Not on any blacklist and didn't have this trouble using ubuntu/ispc2

Any ideas?

Thanks in advance.
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