Solved

Large Email List: I have a large email list which is very outdated, I need help with cleaning the lsit by doing an MX lookup and check if the mailbox exists.

Posted on 2010-08-31
6
366 Views
Last Modified: 2013-12-18
Hi,

I have a large email list which I'm looking to clean up to ensure that 100% of emails follow a proper format, check MX record to ensure the domain exists and also check if the mailbox exists.

I've spent countless hours looking everywhere for a way to achieve this and haven't been able to find a solutions. I would really appreciate help in this. Thank you in advance.

Best,

Tom
0
Comment
Question by:faithless1
[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
6 Comments
 
LVL 4

Accepted Solution

by:
illhelpu earned 500 total points
ID: 33573245
0
 

Author Comment

by:faithless1
ID: 33573485
Thanks this solves the MX lookup issue. Is there any way to actually check if a mailbox exists? I want to make sure there are no bounced emails coming back
0
 
LVL 6

Expert Comment

by:ITaaS
ID: 33578144
There is no way to verify a mailbox exists without attempting to send a message unless you have access to the email server.  I am assuming this list is emails gathered from outside parties, so there is really no way for you to verify prior to sending.
0
How our DevOps Teams Maximize Uptime

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us. Read the use case whitepaper.

 
LVL 5

Expert Comment

by:fredmc
ID: 33578211
Can you use a Perl script, and do you the ability to install Perl modules on the server? If so, I can give you a script.
0
 
LVL 4

Expert Comment

by:illhelpu
ID: 33578262
I don't believe there is a way to verify if a mailbox exist if you do not have access to the server.
0
 
LVL 26

Expert Comment

by:jar3817
ID: 33585612
There exists a verb in SMTP called VRFY that allows you to do just that, verify an address is valid. The problem is what you want to do is exactly what spammers do. As a result the VRFY verb has been disabled by default (and should be) on almost every modern email system.

The only way to weed out the bad addresses is to send your email to the whole list and then watch your logs for the non-delivery reports. Then remove those addresses from your list.

Consistently emailing bad recipients is a red flag and might get you blacklisted.
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

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

Import PST to Exchange using Power Shell new-mailboximportrequest command, you can simply import the PST file into Exchange mailbox or archived. To know How to import PST into Exchange  2013 read the complete article.
Phishing attempts can come in all forms, shapes and sizes. No matter how familiar you think you are with them, always remember to take extra precaution when opening an email with attachments or links.
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
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…

728 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