I have received a spam email from the admin email address I specified for my newly created Moodle site. I have several concerns.
1. How did the spammer obtain my admin email address? I haven't told about my site to anyone. How did they figure out I've just created the site?
My site is hosted by Hostinger, and its domain name (i.e. its website address) has been purchased from GoDaddy. My admin email address is admin@xxx, where xxx is the domain name purchased from GoDaddy. Is it possible the spammer was able to figure out that this domain name had been recently purchased, and then they simply tried various common usernames?
Should I notify Hostinger
and/or GoDaddy about this incident?
2. Has the spammer been able to penetrate my site and send the email from within? Is there a way to check this from the site's logs?
3. If I or my site's future users mark this email as spam, then all future legitimate emails that I will send from this email address will be automatically sent to the spam folder, or deleted. How do I deal with this?