Author: wallace Date: To: exim-users Subject: Re: [exim] Internal un-exist user keep sending mail
Loke wrote: > Hi,
>
> I have multiple domains in my shared hosting server.
> Recently I encounter there is a lot of mail that send from the internal
> domain (un-exist user), to either exist or unexist users (blackhole) within
> the domain.
>
> Kindly advice is that anyway to prevent the mail sent out from the un-exist
> users.
>
> Loke
Use SMTP authentication to prevent non-existent or unauthorized users from sending mail from your system.
