I recently (7/20/2023) began receiving the 554 5.7.1 message when I sent an email containing an URL to my wife's hughes.net email account. I can send and receive emails to the wife successfully without a URL.
The last time I was able to send and email containing a URL was 7/13/2023.
mdmark,
Thanks for reaching out! I see this is your first post! Welcome to the Community! We'd love to take a look into this for you, but I was unable to locate the account connected to your Community profile. Please send a private message to the link provided below, with your account number or a phone number attached!
https://community.hughesnet.com/t5/notes/composepage/note-to-user-id/102584
Thanks,
Remy