How to reject/detect emails claiming to be from my own domain?

[Philip Parsons]

I use sendmail

On Fri, 2016-12-23 at 16:06 -0500, Jason Waters wrote:
What do you use for an MTA?  I know with postfix you can use some smtp restrictions to solve this problem.

On Fri, Dec 23, 2016 at 3:00 PM, Philip Parsons <pparsons at techeez.com<mailto:pparsons at techeez.com>> wrote:
I use Mailscanner and Send mail.  We have a few instances that we are receiving spam from jack at example.com<mailto:jack at example.com> to jack at example.com<mailto:jack at example.com> and it is getting through.  I have not seemed to find and answers as to how to stop this? Anyone got an Idea.  We already have SPF setup which helps but is not fully for this situation.


Thank you.
Philip Parsons





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Thank You
Philip Parsons
Techeez on the go
please excuse the spelling.
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