Solved

SMTP Connector setting in Exchange 2003

Posted on 2009-04-01
6
278 Views
Last Modified: 2012-05-06
Quick question.  I want to add a smart host to a new SMTP Connector that I created.  Which of the three option will allow for the fastest delivery to the smart host?  

1. Enter full fqdn of smart host.  (E.g.  mail.abc.com; This dns name has multiple A records)
2. Enter the fqdn of each hosts separately in the smart host field.  (E.g. mx1.abc.com,mx2.abc.com)
3. Enter the IP address of each hosts separately in the smart host field. (E.g. [123.123.123.123][132.132.132.132])

Thanks!
0
Comment
Question by:e90mdrei
[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
  • 4
  • 2
6 Comments
 
LVL 6

Expert Comment

by:AJermo
ID: 24042075
IP address is always faster because the system never has to do a dns lookup.
0
 
LVL 6

Expert Comment

by:AJermo
ID: 24042117
seperate each ip with semi-colon.
[10.10.10.10];[20.20.20.20]

0
 

Author Comment

by:e90mdrei
ID: 24042228
ok, so the multiple IP in the smart host field is best practices?  Rather than a dns record with multiple A records?  
0
MS Dynamics Made Instantly Simpler

Make Your Microsoft Dynamics Investment Count  & Drastically Decrease Training Time by Providing Intuitive Step-By-Step WalkThru Tutorials.

 
LVL 6

Accepted Solution

by:
AJermo earned 500 total points
ID: 24042375
Best practice is a relateive term.
The advantage to using the FQDN is if the IP address changes but is updated in DNS no further confiiguration is required.  FQDN is more readable to figure out what it is if you use descriptive names.
The disadvantage is when the DNS cache expires the system will re-lookup the records. Every time the system uses the smart host it will ask for the lookup but the OS will have it cached. This increases the overhead slightly.

The advantage to using IP is no further lookup or operation is required.
Disadvantage is if the smarthost IP changes the configuration on the connector will require updating.

As yourself a question...how often do IPs on servers/gateways change? ... most likely the answer is "not often enough to matter".
0
 
LVL 6

Expert Comment

by:AJermo
ID: 24042404
The solution you're suggesting with a single dns name with multiple A records will also work as long as round robin is enabled on the configured DNS server.
0
 

Author Comment

by:e90mdrei
ID: 24065655
Ok, I've setup the outbound smtp connector and added the appropriate smart hosts info and added two front-end servers as the bridgeheads.  

Once messages are being sent and is in the smtp connector, is there a delay in forwarding the mail to the smart hosts?  It seems as though the messages in the state of "queue" from 3-10 mins.  ??  

This smtp connector has the lowest cost therefore has priority over other connectors.  Also, I'm trying out the dns name of the smarthost first to try.  

Please advise..
0

Featured Post

Is Your AD Toolbox Looking More Like a Toybox?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

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

Suggested Solutions

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.
After hours on line I found a solution which pointed to the inherited Active Directory permissions . You have to give/allow permissions to the "Exchange trusted subsystem" for the user in the Active Directory...
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…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

738 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