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Forums > General Discussion Forums > Error Code Discussion and DNS Issues
Subject: Relay Server Error
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madison_guy

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08-26-2007 3:55 PM  

Using Relay Server with Freeware.  Trying to reply to a posting at Craigslist, received the following error:

Mail cannot be delivered to the following recipient: xxxxxxxxxxx@craigslist.org

Reason: Fatal SMTP error when talking to mxi2s.craigslist.org.:

554 : Client host rejected: rDNS/DNS validation failed.

Please setup matching DNS and rDNS records: http://bind8nt.meiway.com/itsaDNSmess.cfm

 

Looks the rDNS lookup on the relay server didn't match the DNS info it passed to the CL mail server.  Is there a workaround, or is it something that only ArGoSoft could deal with?

 

D

 
SteveT
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08-26-2007 7:11 PM  

In ArGo (i'm not sure if the freeware version has all the feature I am going to mention), you need to do the following:

In the ArGo Server Tools Menu, Server Option, you need to set the local host to a FQDN ( FQDN=Fully Qualified Domain Name, such as yourdomainname.com).

You also need a reverse DNS lookup for that domain name.  This would be done by whom ever manages your DNS servers, such as your ISP. You can use DNS Report (http://www.dnsreport.com/) to test your DNS setup and see what errors pop up. From my exprience, as long as there is a reverse lookup, the other mail server will allow the messages to go through.

A lot of site also now require SPF records. This is  something that is part of your DNS setup. There is a link in the links library for a SPF wizard and related info.

 

 
Top Cat Computing BOINC Team StatsRegards,
Steve Topilnycky
Top Cat Computing
http://www.topcatcomputing.com
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News from ArGoSoft Minimize
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Mail Server v1.0.5.9

Mail Server

  • Added additonal tracking of connections for SMTP and POP3: if they stay on for over 30 minutes, they are getting disconnected;
  • Fixed a problem with mailbags when they accept mail only when main server is down: in case of timeout mailbags were still treating the main server as "available" and rejecting mail;
  • Changed color coding of logs. Now red denotes only errors, delivery is green, POP3, SMTP, IMAP connections - blue;

Web Interface

  • Fixed a problem, when session timeouts were causing errors in the windows system logs;
1/2/2009 1:52:01 PM
Happy Holidays to All!!!

Just wanted to wish everybody Happy Holidays, and wish all the best to all in 2009

Looking forward to work with you next year!

Archie

12/23/2008 10:13:32 PM
Mail Server Pro v1.8.9.6
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Email Address Validator

We have discontinued our email address validation service, and launched new web site:

http://www.emailaddressvalidator.com

It provides the web service interface to validate lists of email addresses. We hope that our service will help to reduce unwanted traffic on Internet, ensuring that mail is sent only to valid and legitimate addresses.

Sign up now, and get 150 free validations!

11/25/2008 10:13:02 AM
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  • Fixed couple of problems, which were showing when SQL server was set up to use case sensitive SQL statements;
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Web Interface

  • Made changes to allow logging in using aliases;
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