We have an email alias: email@example.com, which forwards mail to every user in my department.
We are having problem with spam being sent to this address.
I want to restrict this email alias so that it will only receive and forward email from an internal email address or internal IP address: (eg. firstname.lastname@example.org and/or 192.168.1.1-254)
Is this possible?
I am running Redhat 9.0 and Sendmail
Let me know if you need any further information. Thanks everyone.