LinuxQuestions.org
Visit Jeremy's Blog.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 04-26-2006, 05:55 AM   #1
vs_optimist
LQ Newbie
 
Registered: Mar 2006
Location: Ukraine
Distribution: FC5
Posts: 27

Rep: Reputation: 16
Sendmail. Can I use IP address instead of domain name?


Hi!

I need a simple answer to a simple question before I begin to configure sendmail (for the first time in my life by the way)
Can I use IP address instead of domain name? I hope if I know that it's not possible I'll save some time and efforts not trying to configure sendmail with IP address.

Thanks.
 
Old 04-26-2006, 07:25 AM   #2
zaichik
Member
 
Registered: May 2004
Location: Iowa USA
Distribution: CentOS
Posts: 419

Rep: Reputation: 30
In theory, yes, but it depends what your goal is. If your goal is to simply get experience at configuring sendmail and testing if it works, then yes, it is technically possible to run it that way.

If your goal is to actually run a functional mail server on which you or others will depend for mail receipt, then probably not. At the root of things, if you are sending email from a domain literal (IP address) rather than a domain name, you will look like a spammer and mail will generally not be accepted by remote servers. Further, without an MX record, even more mail servers will fail to send you messages.

Finally, if you do not have a domain name, then chances are that your sendmail-reported hostname will not have a DNS record to look up and your IP address will not have a reverse DNS record pointing back to the sendmail-reported hostname. More rejection from remote mail servers.
 
Old 04-26-2006, 08:19 AM   #3
Emerson
LQ Guru
 
Registered: Nov 2004
Location: Saint Amant, Acadiana
Distribution: Gentoo ~arch
Posts: 5,872

Rep: Reputation: Disabled
Additionally, some ISP are known to restrict port 25 traffic, effectively disabling connections to any other mail server than their official mail server. And they may block port 25 so you cannot receive mail.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Sendmail sending as host.domain.com, i want it to be from just domain.com. PlatinumRik Linux - Software 5 10-07-2004 05:32 PM
illegal use of my domain address Lui Linux - Security 9 06-17-2004 06:36 PM
sendmail relay same domain address alphanumeric Linux - Software 0 03-30-2004 09:39 PM
Sendmail: Domain of sender address does not exist 360 Linux - Networking 1 02-02-2003 09:40 PM
Sendmail Domain of sender address does not exist mantiev Linux - Networking 0 05-08-2001 08:58 AM


All times are GMT -5. The time now is 12:51 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration