Solved

Change smtp port in exchange 2007

Posted on 2010-11-12
20
1,100 Views
Last Modified: 2012-05-10
Hi , I  have a major issue.  Verizon FIOS decided to block port 25 in my area for commercial account. I an m running SBS2008 with exchange 2007. Is there anyway to change the smtp server port from 25 to 587. My email is queue is full of outbound email.

Thank you in advance for your help
0
Comment
Question by:mattkiran
  • 7
  • 6
  • 3
  • +2
20 Comments
 
LVL 16

Accepted Solution

by:
Viral Rathod earned 350 total points
Comment Utility
Check this out
Change SMTP port 25 in Exchange 2007
http://www.exchangelog.info/2007/08/how-to-change-smtp-port-25-in-exchange.html
0
 
LVL 49

Assisted Solution

by:Akhater
Akhater earned 50 total points
Comment Utility
no you cannot

well technically you can but this wont help because the receiver's email server will still be listening on port 25 so changing the port won't help in your case
0
 
LVL 76

Expert Comment

by:Alan Hardisty
Comment Utility
0
 
LVL 16

Assisted Solution

by:Viral Rathod
Viral Rathod earned 350 total points
Comment Utility
Very Sorry ,
Akhater is Right receiver's email server will still be listening on port 25 so changing the port won't help in your case .



 
0
 
LVL 49

Expert Comment

by:Akhater
Comment Utility
@alanhardisty how would that solve the issue of his outbound email queue ?

Other SMTP servers will still be expecting communication on port 25 so no matter what ports he change it to email won't pass thru
0
 
LVL 13

Assisted Solution

by:markusdamenous
markusdamenous earned 100 total points
Comment Utility
Verizon have likely blocked port 25 traffic in an attempt to prevent spam originating from their network.  What they should have done in parallel, is provide you with an SMTP Server address on their network through which you can relay out.  It might not be ideal, you likely want to use DNS to route email but as a short term measure will get you out of trouble.

To use this you need to create a new Send Connector.  Set a Smarthost to be the IP/DNS name of Verizon SMTP server.  Set the address space to *

Regards
Mark.
0
 
LVL 76

Expert Comment

by:Alan Hardisty
Comment Utility
@Akhater - You can send out via whatever port you want - this has no bearing on the receiving port at the other end.
0
 
LVL 49

Expert Comment

by:Akhater
Comment Utility
@alanhardisty what you are changing is the destination port so the send connector will be using port, say 26, to communicate with the mail server of gmail.com instead of 25. the latter is not listening to 26

unless you are talking about something different like setting your own smart host relay outthere on 26 or so
0
 
LVL 49

Expert Comment

by:Akhater
Comment Utility
@viralrathod thanks for the sanity check
0
 
LVL 76

Expert Comment

by:Alan Hardisty
Comment Utility
@Akhater - so are you saying that if the Send Connector port is changed to port 26 (as an example), then that server can only communicate to server listening on port 26?
0
IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

 
LVL 49

Expert Comment

by:Akhater
Comment Utility
@alanhardisty  yes exactly since the destination port of the packet should match the listening port of the destination
0
 
LVL 76

Expert Comment

by:Alan Hardisty
Comment Utility
Okay - that makes sense!  Sorry - I'm tired.

You can change the port - as long as you have a smart host on the other end listening on that port, so if Verizon can receive on port 587, then you can send them your mail to be delivered, otherwise switch ISPs to one that is not blocking port 25.
0
 

Author Comment

by:mattkiran
Comment Utility
Hi everyone, I must say that this blog is the best in the world.  I am impressed with the response. I wanted to update everyone. Verizon FIOS is converting their system to accept outbound emails on  outbound port from 25 to 587.  They claim that they are getting a lot of spam on port 25. I followed instruction in this answer to change the send connector port to 587 and then verizon FIOS gave me a smtp server (outgoing.verizon.net) ,user name and password that I had to put in the send connector. Now it is workin. They did not notify anyone. They are converting from state to state. Their smtp server listens on port 587. Thank you very much for your help. Its great.
0
 
LVL 76

Expert Comment

by:Alan Hardisty
Comment Utility
Sorry for the confusing posts - it's been a long week.

Glad you are sorted and mail is flowing.

Alan
0
 
LVL 49

Expert Comment

by:Akhater
Comment Utility
yes what counts is that it is working for you now :)

cheers
0
 

Author Comment

by:mattkiran
Comment Utility
YES...... I have to say it again that all of you are great help. I learned how to change send connector port. That was very important. I hate monopolies. Verizon can do what ever they want. Sucks. Sorry to close this on a negative remark. I wish I could give everyone 500 points. Have a great weekend.
0
 
LVL 13

Expert Comment

by:markusdamenous
Comment Utility
So my comment stands true, they are blocking Port 25 from their connections, but allowing you to relay out via their authenicated SMTP Server?
0
 
LVL 76

Expert Comment

by:Alan Hardisty
Comment Utility
Yes - your comment stands true - the extra part needed was the article on how to change the default port from 25 to 587.
0
 
LVL 76

Expert Comment

by:Alan Hardisty
Comment Utility
Assuming you have all that you need - please don't forget to close down the question accepting the best answer(s) that assisted you with solving your problem.

Alan
0
 

Author Closing Comment

by:mattkiran
Comment Utility
Thank you for your help and sorry for the delay.
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

Suggested Solutions

This process describes the steps required to Import and Export data from and to .pst files using Exchange 2010. We can use these steps to export data from a user to a .pst file, import data back to the same or a different user, or even import data t…
Possible fixes for Windows 7 and Windows Server 2008 updating problem. Solutions mentioned are from Microsoft themselves. I started a case with them from our Microsoft Silver Partner option to open a case and get direct support from Microsoft. If s…
To efficiently enable the rotation of USB drives for backups, storage pools need to be created. This way no matter which USB drive is installed, the backups will successfully write without any administrative intervention. Multiple USB devices need t…
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…

772 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

13 Experts available now in Live!

Get 1:1 Help Now