Make sure your pmta config isn't being exposed and open to public view as it leaks the smtp credentials. And you can always restrict the SMTP connections to single or multiple source IPs by adding the following tag
Code:
<source 10.0.0.0/8>
always-allow-relaying yes
</source>
<source 0/0>
always-allow-relaying no
</source>
Replace 10.0.0.0 with your IP and /8 with the subnet size
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.