Martijn Lievaart said: > [ off-list, my phone does not seem to understand mailinglists ] > > >Yes I understand. The reason I ask is that for IPv4, I am forced to > >use a external relay server with my ISP. However, for IPv6 it is not > >required. In fact, my ISPs relayserver does not support IPv6 at all. > > You could try to use your firewall to dnat all ipv4 connections to your > providers mailserver. It's a dirty trick, but I think it will work. > > F.I. Using iptables on linux (from memory, may contain mistakes): > iptables -A POSTROUTING -t nat -s <your-mailserver-ipv4> -p tcp --dport 25 > -j DNAT --to <isp-smarthost>
I had tried something like this, the problem comes when your users try to do authenticated smtp with another mail server which would obviously fail to login to your ISP's smtp server. -- Jay Lee Network / Systems Administrator Information Technology Dept. Philadelphia Biblical University -- ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
