Mail Server Rules | Psalm 85:10

Introduction

How To Create And Manage PMBx Mail Rules

You will learn how to manage mail rules which prevent or permit emails coming from email addresses which are non-existent. Why would you want to do this?
One trick spammers use to prevent their spam email from being returned to them is to forge the "from" address on their junk.
Though our mail server can automatically do a "reverse check" and reject such email, there are some legitimate senders that also use fake sending addresses, such as "no-reply@somedomaind.com." These can be important emails such as airline ticket confirmations, etc., particularly for southeast Asian airlines.
Because I do not have the ability to reject emails which fail the reverse check on an email box by email box basis, I have in the past chosen to reject them all. This suits most everyone unless they are trying to get some important email such as a password reset email or a flight confirmation.
I have perfected a feature that allows each email box user to do this for themselves. It is not hard, and I'm going to provide step-by-step instructions to configure this to suit each person.

Login

1. Log in to your email box using Pronto

You will manage your mail rules using the PMBx built-in web mail interface called Pronto.
Go to https://mail.pmbx.net/hpronto/ by clicking on the button or copying the link in a new browser window or tab.
You will see the Pronto! login as shown.
Log in using your email address and your password.

Webmail Interface

2. Below is what my webmail interface looks like after I log in.

Webmail Interface

3. The Mail Rules List

Here are my two rules that allow me to manage incoming email which has a fake "from" address.
The first rule has a priority of 5. The second rule is Inactive.
I've entitled the rules "Reverse Check - Fake From Address" and "Discard Reverse Check Fails," but you are free to name these as you prefer.

The Reverse Rules

4. Add Reverse Check Rule

1. Click on the "+" button. Then click on the "Expert Mode" button. In the Name field, type "Reverse Check" or something similar.
2. Click on the "+" icon to the right of "Applies To" to enter the conditions that trigger the rule.
3. Under "Applies To" select "Header Field" as

EXACTLY as shown (WITH ASTERISK) from the drop-down list.
4. In the box next to "is," copy or type exactly this: "X-Reverse-Check: *"
5. In the "Action box," use the "+" button to add the two actions exactly as shown. Select the "Store in" and "Discard" popups and select YOUR "Junk Mail" box by selecting it from the drop-down list. It should look similar to mine. Then click "Save Rule."

The Discard Rule

5. Add The Discard Rule

1. Click on the "+" button, then again on the "Expert" button. In the Name field, type "Discard Reverse Check Fails."
2. Under "Applies To" select "Header Field" as shown from the drop-down list.

3. In the box next to "is," copy or type exactly this: "X-Reverse-Check: *"
4. In the "Action box," use the "+" button to add the two actions exactly as shown. Select the "Discard" and "Stop Processing" popups. Then click "Save Rule."

Rule Activation

6. Rule Activation

Back at the rules list, you activate or inactivate the Discard rule that tells the PMBx server whether to keep or discard emails with faked sender addresses.
Be sure and click "Apply" after you change any of the following.
I suggest you set your "Reverse Check - Fake From Address" to a priority of 5.

If you set "Discard Reverse Check Fails" to "Inactive," then faked emails are saved in your Junk Email, allowing you to view them.
If you set the priority to anything higher that the "Reverse Check" rule, then ALL faked sender email will be irretrievably discarded.