Solved

Remote server dropping connection with Comcast.net in Exchange

Posted on 2007-03-23
3
392 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
[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 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

Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

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

Scam emails are a huge burden for many businesses. Spotting one is not always easy. Follow our tips to identify if an email you receive is a scam.
There are times when we need to generate a report on the inbox rules, where users have set up forwarding externally in their mailbox. In this article, I will be sharing a script I wrote to generate the report in CSV format.
In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
This video discusses moving either the default database or any database to a new volume.

696 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