this is a very common and ugly problem, and believe me your husband is innocent, i get spam from megadick, like WTH, and I assure you that i never go to such sites.
the spamming is done by spam bots, nasty things.
the spam bots picked up your husbands email from the internet, they just crawl the internet and pick up any email they see, and then start sending spam regularly, so please dont advertise your email, if you have to write your email in a public forum like this one write it as
suport [at] softmall.org
not by using @
some ppl even write like this for advanced security:
support [at] softmall [dot] org
these cannot be picked by spam bots.
for now report these emails as spam in gamil and they will no longer enter your inbox. and use
SpamCop.net - Beware of cheap imitations to report this spam