×
INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Route Incoming Email

Route Incoming Email

Route Incoming Email

(OP)
I have installed Sendmail on Centos 7 and want to use it to route all email from the Internet to specific backend mail servers. This is a private hosted platform that hosts multiple domains. I have locked this down so it is not an open relay. I simply want incoming mail addressed to specific domains to go to specific backend mail servers in our hosted environment:

I.E.
Mail for domain domaina.com to route to internal server mail.domaina.com

Mail for domain domainb.com to route to internal server mail.domainb.com

On the sendmail server I have edited the hosts file with the internal IP addresses of the mail servers mail.domaina.com and mail.domainb.com.

In the mailertable file I have added the following lines:

domaina.com esmtp:mail.domaina.com
domainb.com esmtp:mail.domainb.com

However, when testing mail delivery by connecting directly to the sendmail server externally I can see that mail my mail is being routed to the internet and being delivered using external DNS. How can I get the mail to route to the internal servers rather than via the internet?



Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members! Already a Member? Login

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close