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
Solved

Some emails from a particular domain are not delivered to Postini therefore not reaching our Exchange SMTP servers

Posted on 2012-03-13
7
490 Views
Last Modified: 2012-06-27
Hi,

Configuration:

We use Postini as the spam filter solution. Emails are being delivered there and then once they are clean they are sent over to our Exchange servers.

Issue:

We have found that some emails don't seem to be reaching our Exchange servers. We have checked Postini and seen that those emails are not reaching there either. If the emails are not reaching Postini they will not get delivered to Exchange.

I have called Postini but I am still waiting to hear from them. I was wondering if someone could help me out to verify that the problem is not in my end.

Any ideas?

Thank you
0
Comment
Question by:llarava
7 Comments
 
LVL 14

Expert Comment

by:isaman07
ID: 37716084
That domain might be listed in RBL or most probably have problems at their end. If the email is not getting to postini, meaning it was never sent out from their server.
0
 
LVL 8

Accepted Solution

by:
thomasdavis earned 500 total points
ID: 37716106
If you are receiving messages from other domain's and If you can talk to the sending SMTP that is having problems hitting your mail server then it would be on the senders end.
0
 
LVL 8

Expert Comment

by:Tymetwister
ID: 37716156
Put the hostname or IP from whoever's trying to send to you in here and make sure it isn't blacklisted:

http://www.anti-abuse.org/multi-rbl-check/
0
Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

 

Author Comment

by:llarava
ID: 37716183
"If you can talk to the sending SMTP that is having problems hitting your mail server" - What do you mean with that?

I can receive mail from everyone else. I would like to be able to get the MTA logs at Postini in order to determine if the email is rejected. All I can get from Postini is just a SEARCH to go through LOGS but I don't thing they are the raw MTA logs.
0
 
LVL 8

Expert Comment

by:thomasdavis
ID: 37716348
This is the easiest to explain how to test communication to SMTP using cmd, follow instructions how to test communication to the domain that is trying to send to you
http://community.spiceworks.com/how_to/show/11
0
 
LVL 8

Expert Comment

by:thomasdavis
ID: 37716454
Do you know if the domain sending to yours is getting any bounce back indications? If they don't receive a bounce back saying invalid recipient on their side, they are not blacklisted (which would cause a bounce back also), and you are receiving messages from other mail servers, then its on their end no question about it. I would guess its sitting in the route table on their SMTP.  Hope that helps.
0
 

Author Comment

by:llarava
ID: 37717195
The one thing I have found in commond with the messages that are not being delivered is that they all come from automated mailboxes. Basically users or costumers send an email and then we have to receive an automated response with a confirmation.

There must be a problem in my end because I am having the same problem with a different domain. At this point I have the same issue with 2 different domains that send automated messages to our ORG.
0

Featured Post

Ransomware: The New Cyber Threat & How to Stop It

This infographic explains ransomware, type of malware that blocks access to your files or your systems and holds them hostage until a ransom is paid. It also examines the different types of ransomware and explains what you can do to thwart this sinister online threat.  

Question has a verified solution.

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

Learn to move / copy / export exchange contacts to iPhone without using any software. Also see the issues in configuration of exchange with iPhone to migrate contacts.
This article lists the top 5 free OST to PST Converter Tools. These tools save a lot of time for users when they want to convert OST to PST after their exchange server is no longer available or some other critical issue with exchange server or impor…
In this video we show how to create a Contact 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 >> Contact ta…
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…

789 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