SPAM comming through xfs mailing list

Hi,

I'm receiving lots of spam through xfs mailing list.

Is it possible to only accept messages from subscribers or at least not broadcast messages from 'Mailer-Daemon' ?

Thanks

Laurent

I'm looking into it.

ya that option gets rejected each time it comes up, most list people find it to restricting and is an issue for people that do not post from the same email they subscribe with.

This is clever spam to look like bounce email.