4 ms·People don't set up email servers on VPN endpoints. That's not how email works.by johnklos 4y agoPeople don't set up email servers on VPN endpoints. That's not how email works.chmike 4y agoYou don't need a mail server to send mail. One can send mails through a VPN as client.johnklos 4y agoThen the spam is coming from the email servers which are used to relay that spam. Headers can be forged, so the source before the spam server can't be trusted as real.