Renaud Allard wrote: > Marc Perkel wrote: > > >> It doesn't require special whitelisting although you could if you wanted >> to. If the dead IP which is the lowest MX were dead to everyone except a >> white list that you would set with iptables then you could whitelist. >> But it's not really necessary. And technically you don't have to have 3 >> IP addresses. All you have to do is point the bogus MX records to any IP >> with port 25 closed. >> > > You really should control the additional IPs if you want to be sure port > 25 stays closed. What happens if you point to an IP you don't control > and someone suddently put an SMTP server on this IP and starts answering > 5xx errors to all your mails? >
I wouldn't do that. If that happened then it would bounce a lot of good email. -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
