I can only think in one solution. Via iptables and src-nat. Not so-random, but you can change your outbound IP address every minute. And AFAIK, once a connection has been established, the nat table mantains the translation.
On Mon, May 21, 2012 at 5:42 PM, <[email protected]> wrote: > Hello everyone > > > I am the owner of a growing hosting enterprise in my country (Perú), and > we are facing big rise on our client number. > > As an efect of this we are seeying a rise in mail outbound in our servers. > Even thoug we put limits to hourly sending, having more than 9k clients, > all delivering through the same cluster, it lacks of efectiveness because > each server in cluster uses only one ip for sending tasks. We are now > seeying blocking issues because of the many clents generated traffic. > > We talked to some people at godaddy and hostgator, as we know they use a > cluster system that includes on each server a list of IPs that rotates in a > random fashion, so even with high demand quality service on mail delivery > from client accounts is always achieved. > > I would like to ask for some guidance and help to this comunity on how can > we could implement such solution to rotate in a random or other way the IPs > for sending clients mails. > > I hope you people can see my situation and can help me with this. We used > to work with exim, but since we changed to QMT it was the best desition we > ever made on this matters. Now we need to push it to a next level. > > > > Thanks a lot. > > >
