Error message when clicking on a link in mysignature block

[aplco]

Whenever someone clicks on the link to my website from my signature block in an email, they get this error message:

Oops.

An error occurred during a connection to eventtracking.hubspot.com.

The page you are trying to view cannot be shown because an error in the data transmission was detected.

Please contact the website owners to inform them of this problem.

Any ideas what /why this is happening?

[Derek_Gervais]

Hey @aplco ,

Can you send a link to your portal so that I can take a closer look?

[aplco]

This is my signature block: 

Arthur P. Lennig, Jr. CBI, BCI, CMAI

Certified Business Intermediary

Board Certified Intermediary

Certified Merger & Acquisition Intermediary

Murphy Business & Financial Corporation - Georgia, Inc.

1870 The Exchange, Suite 200

Atlanta, Georgia 30339

770-303-0044

678 852-6228 (Direct)
770-234-6165 (Fax)

Website: www.MurphyBusiness.com

Website: www.AtlantaBusinessBroker-ArtLennig-Murphy.com

Website: //www.Linkedin.com/in/ArtLennig

Both of the MurphyBusiness sites are a problem.

I tried to send you the above but could not, received this error message:

Your post has been changed because invalid HTML was found in the message body. The invalid HTML has been removed. Please review the message and submit the message when you are satisfied.