http://www.macromedia.com/support/coldfusion/ts/documents/tn17277.htm
Does anybody know any details about these parameters and if they'd be good to adjust on an Imail server?
MaxUserPort, TcpWindowSize, MaxFreeTcbs, MaxHashTableSize, TcpTimedWaitDelay
Since I don't remember Win TCP stack tuning discussed much here before, I'd like to hear from the high-volume admins (not their waistlines, their numbers of messages/day), like Ikano, etc. about whether they have tuned TCP and if they ever have IMail connection refused.
I know I've seen this problem MANY times with my IMGate clients and it's been real bitch for them to figure out how fix it, usually by throwing $$$ at a new machine, trying to outrun it.
If we can come up with a set of "pedal to the metal" Win32 TCP params, it would be of great use all around.
Although MS charges you big $$$ for Win Server, you can't count on them out of the box to deliver it with "server TCP params".
btw, I'm sure LOTS of Imail boxes are "connection refusing" but since without any external tool to watch it (as IMGate does) people don't know it's happening. And Imail doesn't log such an event, either. Flying at night and without instruments. Watch out for those mountains (of spam).
With the TCP stack no longer gagging prematurely, IMail admins can concentrate on the "real" limit, which is disk performance.
Len
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