Firewall and Broken links on mails

[saicyl]

Hello,

I appeal to your kindness, my problem concerns my firewall rules on PfSense.

The problem is with my internal email messaging. When someone (internal or external to the LAN) sends an email with some links to someone on the local network, the links are broken. So,the filtering is done at the reception of the mail. All this is very strange.

According to you, what is the problem?

Thank you in advance.

[firewalluser]

Need more info like how exactly are the links broken, can you show what the links should be like and how they get broken?