Solved

Underscore in Exchange server name

Posted on 2004-07-30
1
326 Views
Last Modified: 2012-05-05
I have an Exchange server 5.5 that I send mail out to the Internet, will the underscore cause any problems with older mail systems not being bale to receive mail from me and why?  I know underscores are not RFC compliant per http://www.faqs.org/rfcs/rfc1035.html, but I have sent mail out like this for years with no problem until now someone says they have a Groupwise mail server not receiving mail from me due to "a rejection due to validation failure."  

Although I know it is not the preferred naming convention for a mail server, will it in all intents and purposes cause mail to not be received by certain mail servers?

thanks.
0
Comment
Question by:ohmadmin
1 Comment
 
LVL 104

Accepted Solution

by:
Sembee earned 250 total points
ID: 11680770
That depends if it is sending that name out to the Internet.

If the machine is known to the Internet as mail.domain.com then you should be fine.
If the machine is known to the Internet as our_mail_server.domain.com then you should change it. I cannot remember if you can a different name in Exchange 5.5 for FQDN and server name. I know you can in Exchange 200x.

The validation failure could be reverse lookup problem. More sites and servers are starting to use this to validate that you are who you say you are. You would need to speak to your ISP to resolve that problem.

Simon.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Email going to junk mail folder, seeing the following 18 52
Gmail / iphone 3 51
smtp c source code 7 49
Weekend adv creator 3 14
I tend toward trying the newest hardware and software.  Thiss sometimes works out to my benefit, and sometimes not.  Because I downloaded and installed Android 5.x (http://www.experts-exchange.com/articles/18084/Upgrading-to-Android-5-0-Lollipop.htm…
Article by: Rob
Notes 8.5 Archiving Steps and Tips This article covers setting up a Notes archive, and helps understand some of the menu choices making setting up and maintaining a Notes archive file easier.
The purpose of this video is to demonstrate how to set up an account with Mailchimp. This will be demonstrated using a Windows 8 PC. Tools Used are: Mailchimp.com Go to Mailchimp.com : Enter an Email, Username, and Password. Click Create My Acco…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

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

27 Experts available now in Live!

Get 1:1 Help Now