Solved

Not receiving some e-mails from certain domains

Posted on 2009-04-09
8
1,873 Views
Last Modified: 2013-11-30
Hello,

I have Windows server  SBS 2003 with exchange server 2003.

Sometimes, i do not receive e-mails from certain domains or cannot send mails to certain domains.

I can receive e-mails from yahoo, but sometime i cant. The sender receives this error:
Connected to XXX.XXX.XXX.XXX but connection died. Possible duplicate! (#4.4.2)
> I'm not going to try again; this message has been in the queue too long.

I did some tests using gmail, yahoo, hotmail and i can receive mails from my accounts.

I am not listed on any blacklist on spamhaus.org.

My website is hosted at bluehost: domain.com, but all my mails are redirected here at mail.domain.com

I receive at least 1 notification a day and i cannot find the cause of this.


0
Comment
Question by:maxalarie
  • 4
  • 4
8 Comments
 
LVL 65

Expert Comment

by:Mestha
ID: 24108746
Blacklisting wouldn't affect inbound email, only outbound.
What is between Exchange and the internet? Is it just Yahoo that is generating that error?

Simon.
0
 
LVL 2

Author Comment

by:maxalarie
ID: 24109015
This 4.4.2 error is only from yahoo.

There is my Firewall --> switch --> mail-server
0
 
LVL 65

Accepted Solution

by:
Mestha earned 500 total points
ID: 24109348
If it is only happening with Yahoo then it may not be your problem. I have seen an identical error posted elsewhere in the last week or so, that was mentioning a SonicWall firewall which may well be the cause.

The NDR isn't an Exchange message, so it is being generated elsewhere.

Simon.
0
 
LVL 2

Author Comment

by:maxalarie
ID: 24109524
thats what i thought, but I also receive exchange error codes on a weekly basis.  I looked up the error codes:
5.5.0 and 4.4.7.   I am more worried aboty the errior 4.4.7 :
 Could not deliver the message in the time limit specified. Please retry or contact your administrator <"mydomain.com" #4.4.7>"
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 65

Assisted Solution

by:Mestha
Mestha earned 500 total points
ID: 24111923
Error codes on their own are close to useless. You have to look at the text in the NDR for the cause of the problem. Connection timeouts can have any number of problems, many of them outside of your control.
Firewalls are a common cause, scanning the SMTP traffic.

Simon.
0
 
LVL 2

Author Comment

by:maxalarie
ID: 24197765
Good Day Simon, I went to Dnsstuff,  and I had this warning when  completing a report:

WARNING: One or more of your mailservers is claiming to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). If your mailserver sends out E-mail using this domain in its EHLO or HELO, your E-mail might get blocked by anti-spam software. This is also a technical violation of RFC821 4.3 (and RFC2821 4.3.1). Note that the hostname given in the SMTP greeting should have an A record pointing back to the same server. Note that this one test may use a cached DNS record.

mail.domain.com claims to be invalid hostname '******************************************************************************************************************': <br />   220 **************************************************************************************************** <br />


I think it might be related to my problem.
0
 
LVL 65

Expert Comment

by:Mestha
ID: 24199587
That looks like a PIX.
You need to disable the FIXUP SMTP in the PIX configuration.

Simon.
0
 
LVL 2

Author Comment

by:maxalarie
ID: 24264330
Merci Simon.
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

Exchange server is not supported in any cloud-hosted platform (other than Azure with Azure Premium Storage).
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.
In this video we show how to create a Shared Mailbox 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 >> Sha…
To show how to generate a certificate request 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 Servers >> Certificates…

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

22 Experts available now in Live!

Get 1:1 Help Now