husband getting weird texts from "non existent emails"

The text came from "lhmjudu@rnlaeuixi.com" 

I thought he was signed up for some sexual website or porn or something. I don't believe in that stuff, and from what he has said, he hasnt watched porn in well over a year. 

I googled the email and it literally doesnt exist. I went through his email and theres nothing. Im very paranoid lately, probably because of my hormones going crazy lol. Im just curious if anyone would know why he'd get a text like that? We've been going through something lately so it freaked me out because i dont want him to be out looking for someone else or watching porn. 

Its probably just spam, but i thought i'd see what other ladies say.

EDIT: it came from an email but it was a text message. Idk if that means anything. It was something/someone who had his number