My email is being used for spam

Not sure what happened but looked in my spam box for my emails i normally have just a couple

looked in it today and there are loads and loads of mail delivery failures
opened one of them and it says this

Domain xxxxxx.co.uk has exceeded the max emails per hour (500/500 (100%)) allowed. Message discarded.


Just seems to be happening every minute off half hour.

Any help please

Have just brought the website from here

so your domain is linked with gSuite ? Have you tried with updating or activating your account security ?

Last Sept i bought a domain from Hostinger, a week later i began receiving 30-40 SMS messages per day from website builders, about how they will build me a website for cheap, received 5-10 calls /day from cold callers about the same website builds, SEO services, Logo design and hosting. I even received a couple scam calls for the first time in my life.

xcodes said:

so your domain is linked with gSuite ? Have you tried with updating or activating your account security ?

Click to expand...

i have it linked to my Gmail account.

Vinay Soulless said:

Last Sept i bought a domain from Hostinger, a week later i began receiving 30-40 SMS messages per day from website builders, about how they will build me a website for cheap, received 5-10 calls /day from cold callers about the same website builds, SEO services, Logo design and hosting. I even received a couple scam calls for the first time in my life.

Click to expand...

Sounds like they didn't protect your WHOIS data with domain privacy.
When your info is available like that scrapers who scrape the web 24/7 for this kind of WHOIS entries will start spamming the shit out of you with website related offers.