Let's encrypt error

Hi guys!

I’m trying to generate a SSL certificate for a domain. But I’ve got this error:

“u’detail’: u’DNS problem: NXDOMAIN looking up A for mail.domainname.it - check that a DNS record exists for this domain”

But I don’t want to use the email for that domain.
How I can “exclude” the email from this configuration?

In the Letsencrpt tab in Virtualmin, it gives you the choice of accepting their suggestions OR to just generate a cert for a list of domains.
So, Use the custom list and just add mydomain.com and www.mydomain.com to it (assuming you have a www subdomain)

@asimpledeveloper in lets encrypt tab click on for selected domain and there type it like this

domainname.it
www.domainname.it

hit request and this exclude mail.domainname.it from it

It worked, thank you.
But, if I’d like to extend it to Webmin page?
Should I add the host too?
Thanks again!