Solved

Remote server dropping connection with Comcast.net in Exchange

Posted on 2007-03-23
3
387 Views
Last Modified: 2008-02-01
I'm running Exchange 2003 on Server 2003. I've created email distribution lists via mail-enabled public folders. The problem I'm having is that when I send emails to the distribution list, comcast.net is the only one that doesn't recieve emails from my list. In Exchange System Manager, it tells me "the remote server dropped the connection" and in Event Viewer, I get the following error for every comcast.net recipient:

"This is an SMTP protocol error log for virtual server ID 1, connection #900. The remote host "63.240.76.26", responded to the SMTP command "rcpt" with "452 too many recipients with no from address, send more in a second session  ". The full command sent was "RCPT TO:<xxx@comcast.net> NOTIFY=NEVER  ".  This will probably cause the connection to fail."

How can I resolve this? Comcast is the only ISP i'm having this issue with.
0
Comment
Question by:lenivan
3 Comments
 
LVL 104

Accepted Solution

by:
Sembee earned 500 total points
ID: 18783976
What you are being caught on is an antispam measure. Comcast is detecting that you are sending to a list of email addresses and blocking the connection. A common spammer trick is to put all the emails in to the BCC field, then a single email address in the TO field and then send away. Doesn't expose their address list, but makes it simple to send the message in bulk.

Are all of these email addresses in the list external? If so you may want to look at a different tool for sending the messages. Exchange is a very poor list server and there are far better products on the market.

Simon.
0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

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

Local Continuous Replication is a cost effective and quick way of backing up Exchange server data. The following article describes the steps required to configure Local Continuous Replication. Also, the article tells you how to restore from a backup…
Marketers need statistics and metrics like everybody else needs oxygen. In this article we explain how to enable marketing campaign statistics for Microsoft Exchange mail.
In this video we show how to create a Distribution Group 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 Recipients >>…
In this video we show how to create an Address List 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 Organization >> Ad…

777 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