Am 21.07.2011 12:55, schrieb deb...@orthank.net: > Hi, > > we are using couple of servers with postfix to send newsletter > to clients. Sending is pretty fast but after a short time every > server is beign occupied with handling deferred mails. > > I got idea that maybe it is possible to somehow handle deferred > mails on different machine. So primary servers will be bussy only > with sending mails where no problem occures and when something is > wrong and mail goes to deferred q, it will be forwarded to different > machine which take care about it. > > I spent some time with googling and browsing documentation but I > didn't find much so far. > > Thaks for any help. Maybe idea is completely wrong. >
depending setup on what you need how many emails do you send out ? to what kind of addresses ( gmail , gmx , big mailers etc ) is here urgent need that they reach in some defined time window? do you have allready slow transports for big mailers sign your mail with dkim, have matching reverse dns records use whitelisting features at big mailers get out addresses of your addressbase which cant be delivered several times bounce unknown domains at income level etc, this may avoid few deferreds a cheap easy solution may be if you have enough ips use some hostserver with virtual oses i.e vmware etc each with their own ips and postfixes and use smtp_fallback_relay feature to handle outgoing mail over/between the virt servers, but be aware of greylisting times, so mail should stay on one server to honor this times same at deliver rates at other servers or perhaps the last in line server is your garbage pull out i guess the same can be done with one machine and i.e postfix instances etc how you are creating that newsletters ? mixing the recipient adresses may help ( dont send hundreds of mails at once to one servers , mix it to avoid deliver rates ), perhaps check mx records before send etc etc analyse your current logs , to find out what solutions fits best to your needs this was discussed several times here on the list read archive for solutions may fit to you -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria
