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

allow send email only from local domain

allow send email only from local domain

allow send email only from local domain

Good afternoon, I need an hand to make a custom configuration on my Sendmail 8.13.8. I already configure it to allow relay only for authenticated users. But I want to increase sevurity and make also another limitation if it is possible: allow sending email only for local domain. For example, domain A.COM is locate in my server and can send email to everyone, domain B.COM is NOT locate on my server and I want to block access to my smtp server also if it uses authentication.
I need this to block possible spam send from an infected pc through my mail server using different email address.
This is my actual access file:

     Connect: localhost.localdomain     RELAY
    Connect: localhost     RELAY
    Connect:     RELAY

Can anyone help me?
Thanks a lot.

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