> How can I refuse mail from hosts who don't have an open port 25? > > What do you think from such a check?
i have tried this, it's not useful, so i didn't leave the check in place it's very common, perhaps even the norm that the IP address which delivers mail to me itself will not accept an incoming port 25 connection > I've investigated why somebody did not receive mail from a virtual > machine, and I found out her provider (reviced.nl) refuses all mail > from a host what does not have port 25 open. I have much problems > with spam and I would like to reduce it. this will stop a lot of legitimate mail and probably not stop much spam
