Re: [IMail Forum] Separate SMTP Server - Slightly OT?

[Matt]

I agree, this was very informative. I assume that if this is the case, the limitation was initially unintentional, though it provides an artificially low ceiling for users with fast hardware and heavy load, and a spam problem reaching 90% of mail volume.  No doubt that my disgust for Ipswitch screwing me and a good deal of their customer base taints my perceptions of their product and the reasons for the shortcomings.  Although these limitations may exist in IMail's implementation, MS SMTP allows you to tune this outside of the registry, so there seems to be a layer missing somewhere in IMail that needs to be resolved.  This might also apply to other MS services such as HTTP and FTP, where the settings within the console override the settings in the registry. I also came across the following from the Microsoft site that describes the associated TCP/IP registry settings:     http://www.microsoft.com/resources/documentation/Windows/2000/server/reskit/en-us/Default.asp?url=""> This shows the setting that 'appears' to allow one to override the limit of 64 connections.  I recall seeing an article in the past from a competing mail server vendor describing hot to tweak these settings for optimal performance on a very high volume server.  Maybe someone can come up with that article. Matt Darin Cox wrote: If you're having problems with sockets not being closed by the OS for what seems like ages, try this Registry tweak: HKLM_SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\KeepAliveTime REG_DWORD 60000 ( = 1 minute) Some, if not all, abnormally ended client connections should be cleaned up by this setting. The default, before you added this setting, was two hours. Hi Sandy, Very informative "lay of the land"...thanks. On the reg tweak - if you have other services, like HTTP and FTP running, on the same box wouldn't it cause their connections to be cleaned up as well? HTTP shouldn't be that long, but with FTP, instead of having a 5 or 10 minute timeout by the FTP server, wouldn't this cause connections to be dropped after 1 minute? So for multi-function servers, perhaps a compromise of, say, 10 minutes? Darin. To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ -- ===================================================== MailPure custom filters for Declude JunkMail Pro. http://www.mailpure.com/software/ =====================================================