Its not an os limit, more a 'process stack size' problem This problem is not OS dependent (even if the max number of threads = could be different from one to another)
Xmail uses a one thread per connection model so the only think to do is = to=20 recompile xmail and re-link with stack size increased to get more = 'threads'. Others models are a pool of threads, each handling many connections. Perhabs Davide could estimate if a change have to be done in code to = support this last model. This link could help understand this 'limit' :) http://blogs.msdn.com/oldnewthing/archive/2005/07/29/444912.aspx The final question is : Why so many connections ? Seems you will need to close more rapidly 'bad' connections with more efficient filters on xmail :) Francis -----Message d'origine----- De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] la part de Tracy Envoy=E9 : mardi 30 octobre 2007 12:13 =C0 : xmail@xmailserver.org Objet : [xmail] Re: XMail Win32 threads limit I have not noticed this specifically with xmail, but I have noticed = this=20 with other applications. I wrote a very simple test application once=20 (that did nothing but spawn threads which sat idle for 5 minutes, then=20 exited). The count was right around 1800 when the application became=20 unable to spawn additional threads - when some of the spawned threads=20 exited, the application was then able to spawn additional threads. Edinilson - ATINET wrote: > Since a week we could note a massive (and abnormal) smtp connections = in our=20 > XMail server (XMail 1.25 Win32 on Windows 2000 Server). > After many adjusts in XMail threads to support this "DDOS", we could = note an=20 > interesting thing: Windows 2000 Server does not support more than = 1800=20 > threads (counting all kind, pop3 threads, smtp threads, mailer = threads,=20 > etc). > After +-1800 threads, XMail.exe is still there but not answering = anymore. >=20 > Could others XMail Win32 users confirm this value (1800) ? >=20 > Regards >=20 > Edinilson > --------------------------------------------------------- > ATINET-Professional Web Hosting > Tel Voz: (0xx11) 4412-0876 > http://www.atinet.com.br=20 >=20 > - > To unsubscribe from this list: send the line "unsubscribe xmail" in > the body of a message to [EMAIL PROTECTED] > For general help: send the line "help" in the body of a message to > [EMAIL PROTECTED] >=20 >=20 - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
