Solved

SMTP Connection from outside network will not send, 550 5.7.1 Unable to Relay

Posted on 2006-06-21
6
282 Views
Last Modified: 2008-01-09
Our entire office used to be setup on the same domain and lan. We had no issues this way and everyone's outlook was connected using Exchange as the account type. Now our office has split and half of the people are at a different location on a different domain. I set them up to connect over the WAN to my server and use IMAP/SMTP. Everyone can receive at the new office no problem but when it comes to sending we have issues. We can send to addresses that we host such as me@mydomain.com but cannot send to outside address such as @hotmail.com. For outside address we get the error:

 "Your message did not reach some or all of the intended recipients.

      Subject:      3334434
      Sent:      6/21/2006 12:25 PM

The following recipient(s) could not be reached:

      'me@hotmail.com' on 6/21/2006 12:25 PM
            550 5.7.1 Unable to relay for me@hotmail.com"

Like i said receiving is fine for the remote office and both sending and receiving work perfectly from the local office where the Exchange 2003 server is hosted from. I know the problem has to do with the Access and security properties of the SMTP Virtual server but am not sure where. I do require the outlook account to authenticate for outgoing mail but am not certain I am typing in the correct login name (ie "mydomain\username" or "username@mydomain.com"). Lastly I should mention that if I add the IP address of the remote client trying to send via SMTP to the relay restrictions area they are able to send, but I dont want to have to add every IP for every client whenever they want to send. Any help is much appreciated!!!!
0
Comment
Question by:ephobot
[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
  • 2
6 Comments
 
LVL 1

Expert Comment

by:McRight
ID: 16955686
you have to add the remote subnet to the relay restrictions otherwise they are not entitled to send through the smtp virtual server
0
 

Author Comment

by:ephobot
ID: 16955948
oh nevermind! oh course right after i post my question i find the topic with the answer i needed. it turns out it was the fixup on my cisco pixfirewall the was interferring with SMTP. everything works great now though. thanks anyway. =D
0
 

Author Comment

by:ephobot
ID: 16955967
please close this topic
0
 

Accepted Solution

by:
CetusMOD earned 0 total points
ID: 17255651
PAQed with points refunded (500)

CetusMOD
Community Support Moderator
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

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

Find out what you should include to make the best professional email signature for your organization.
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.
To show how to create a transport rule in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Rules tab.:  To cr…
The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager

734 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