Solved

Remote server dropping connection with Comcast.net in Exchange

Posted on 2007-03-23
3
383 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

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

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

Lotus Notes – formerly IBM Notes – is an email client application, while IBM Domino (earlier Lotus Domino) is an email server. The client possesses a set of features that are even more advanced as compared to that of Outlook. Likewise, IBM Domino is…
Not sure what the best email signature size is? Are you worried about email signature image size? Follow this best practice guide.
In this video we show how to create an Accepted Domain 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 >> Ac…
In this video we show how to create an email address policy 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…

863 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

Need Help in Real-Time?

Connect with top rated Experts

24 Experts available now in Live!

Get 1:1 Help Now