Editing Futotemporarywikipage (section)

==== Setting Up Mail Server Port Forwarding so you Receive emails: ====

A “mail client” is a program you use to read &amp; send your email from the mail server (the mailcow machine we are setting up). Examples are k9 mail, Microsoft Outlook, Mozilla Thunderbird, etc., or just using the web interface.

If you are going to use the mail server while connected to the VPN, '''''THIS IS THE ONLY RULE YOU NEED TO ADD!''''' This is for '''receiving email.''' This port '''''must''''' be opened to the public.

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===== Create NAT Rule =====

# Access '''pfSense''' at <code>https://192.168.5.1</code>
# Go to '''Firewall → NAT'''
# Under the '''Port Forward''' tab, click '''Add'''
# Configure the following:
#* '''Interface''': WAN (incoming traffic)
#* '''Protocol''': TCP
#* '''Source''': Any ''(you can’t predict which mail servers will email you)''
#* '''Destination''': WAN address
#* '''Destination Port Range''': 25
#* '''Redirect Target IP''': Your mail server IP (here in our example it’s <code>192.168.5.3</code>)
#* '''Redirect Target Port''': 25
#* '''Description''': “Receive Emails”
# '''Important''': Check “Add associated filter rule”
# Click '''Save'''
# Click '''Apply Changes'''

'''Critical Note''': Port 25 MUST be open or you’ll never receive email. This is non-negotiable for a mail server.

<blockquote>'''NOTE:''' When setting up port forwarding for a mail server, make sure that your ISP isn’t blocking it to stop spam. Yours might. It’s not unheard of with residential internet providers. You are paying for a residential connection, not a business one, and they’ll [https://www.youtube.com/watch?v=izXnCkrfjO0 remind you of it way they can](actually, they’ll do that even when you pay $409.99/mo for the business one).
</blockquote>
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