On Mon, Sep 14, 2015 at 09:56:27AM +0800, Ken Peng wrote: > On 2015/9/14 ζζδΈ 9:50, Viktor Dukhovni wrote: > >What is the Postfix version of your server? What software do the > >clients use? > > We are actually using a customized version of Postfix, adding some features > to support distributed systems. Yes I was talking about MTA to MTA > communications, not MUA. We have hundreds of Postfix as MX cluster. The user > number is huge, it's more than 500 millions IMO.
That does not answer the question. What's the Postfix version you customized. As for 500 million users, that's a rather large scale, congratulations. You have still not answered the most important questions. Just "MTA to MTA" is not a sufficiently complete answer. Again, if you don't describe the context for you question, you'll get answers that waste your time and the time of the people trying to help you. -- Viktor.