Since a week we could note a massive (and abnormal) smtp connections in our
XMail server (XMail 1.25 Win32 on Windows 2000 Server).
After many adjusts in XMail threads to support this DDOS, we could note an
interesting thing: Windows 2000 Server does not support more than 1800
threads (counting
I have not noticed this specifically with xmail, but I have noticed this
with other applications. I wrote a very simple test application once
(that did nothing but spawn threads which sat idle for 5 minutes, then
exited). The count was right around 1800 when the application became
unable to
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
On Tue, 30 Oct 2007, Edinilson - ATINET wrote:
Since a week we could note a massive (and abnormal) smtp connections in our
XMail server (XMail 1.25 Win32 on Windows 2000 Server).
After many adjusts in XMail threads to support this DDOS, we could note an
interesting thing: Windows 2000
I forgot about making the new pre-release:
http://www.xmailserver.org/xmail-1.25-pre20.tar.gz
http://www.xmailserver.org/xmail-1.25-pre20.win32bin.zip
This has the new PSYNC timeout option, and I also updated OpenSSL binaries
to the new version.
- Davide
-
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On Tue, 30 Oct 2007, Davide Libenzi wrote:
I forgot about making the new pre-release:
http://www.xmailserver.org/xmail-1.25-pre20.tar.gz
http://www.xmailserver.org/xmail-1.25-pre20.win32bin.zip
This has the new PSYNC timeout option, and I also updated OpenSSL binaries
to the new
Davide, how XMail handles the following situation:
SERVER SIDE
-EnableAuthSMTP-POP3 1
-Many CustMapsList configured
MUA SIDE:
-My server requires authentication *NOT* enabled
The client try to send a message (smtp) AFTER a POP3 *BUT* your ip is listed
in some blacklist configured in
On Tue, 30 Oct 2007, Edinilson - ATINET wrote:
Davide, how XMail handles the following situation:
SERVER SIDE
-EnableAuthSMTP-POP3 1
-Many CustMapsList configured
MUA SIDE:
-My server requires authentication *NOT* enabled
The client try to send a message (smtp) AFTER a POP3 *BUT*