Mail form fails unless mail is to my domain
I have a simple perl/cgi mail form on my site, which is very rarely used. It sends an e-mail to my personal e-mail on another domain.
The form is very rarely used. The last real message I received was in December 2018.
Yesterday, I decided to test it, and, although the form claimed, success, I received no e-mail.
After a lot of debugging, it turns out that I can only send mail via the form to my own (inMotion-hosted) domain.
I can imagine that this is a security measure to keep me from building/hosting a spam-bot.
So I have a couple of questions:
* When did this change go into effect?
* Why wasn't I told?
* Is there any way I can find out if anyone has tried to contact me in the last 16 months, and what they might have included in their messages?