Solved

MSExchangeTransport - 7010 unable to relay

Posted on 2008-06-14
5
929 Views
Last Modified: 2008-06-15
Hi
I'm running exchange on an SBS server, and when I look in my event logs I see these messages

This is an SMTP protocol log for virtual server ID 1, connection #92. The client at "190.2.22.85" sent a "rcpt" command, and the SMTP server responded with "550 5.7.1 Unable to relay for some-address ". The full command sent was "rcpt TO:<some- address>". This will probably cause the connection to fail. For more information, click http://www.microsoft.com/contentredirect.asp.

As far as I know my server shouldnt be relaying messages is there a way I can stop this?
Thanks
0
Comment
Question by:Dan560
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 58

Accepted Solution

by:
tigermatt earned 500 total points
ID: 21785978
>>> "As far as I know my server shouldnt be relaying messages is there a way I can stop this?"
That's correct - and the server isn't actually relaying any mail. What is happening is a spammer is trying to use it as a relay, but the moment they are doing that, it is responding with the message "Unable to relay for <some-address>". If it said a message was accepted for transmission - or something to that effect - then I would be worried since you are an open relay potentially sending out spam. But as it stands, you are not anything of the kind.

There are two ways to check if you're an open relay, but based on the information you've provided, I can tell you now that you are not acting as one.

http://www.amset.info/exchange/smtp-openrelay.asp
OR
http://www.abuse.net/relay.html

-tigermatt
0
 
LVL 2

Author Comment

by:Dan560
ID: 21786093
Ok, I did the checks and its not an open relay.. so is there a way to stop spammers attempting to do this? I'm the type of person that likes to keep my event logs free of errors! but if this is isnt possible then it isnt really a problem.
0
 
LVL 58

Expert Comment

by:tigermatt
ID: 21786096
If you've got port 25 open to your server - which you must have open for legitimate mail to be received to mailboxes at your domain - then spammers are always going to be able to access Exchange and will always attempt to send mail through your server. Provided it fails everytime, they should give up after a few attempts - but that's not to say there's not another spammer out there who will come along and try.

Unfortunately spammers - who are evil people - are always going to do this. There's nothing you can do about them using your server in this way unfortunately.

-tigermatt
0
 
LVL 2

Author Comment

by:Dan560
ID: 21788782
never mind, thanks for your advice.
0
 
LVL 58

Expert Comment

by:tigermatt
ID: 21788793
You're welcome,
:-)
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Following basic email etiquette rules will help you write a professional email and achieve a good, lasting impression with your contacts.
A list of top three free exchange EDB viewers that helps the user to extract a mailbox from an unmounted .edb file and get a clear preview of all emails & other items with just a single click on mailboxes.
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question