IMail - Error: 550 Unable to relay for [EMAIL PROTECTED]
Product: Version: Platform:
IMail All NT
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----
Question/Problem: I always receiving the following error:
|------------------------- Failed addresses follow: ---------------------|
<[EMAIL PROTECTED]> ... transport smtp: 550 Unable to relay for
[EMAIL PROTECTED]
Answer/Solution: Chances are, you need to turn off the Microsoft SMTP server
in IIS.
Then stop and restart IMail's SMTP service.
----- Original Message -----
From: Omar K. <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, April 06, 2000 4:10 AM
Subject: RE: [IMail Forum] DoS and imail
> I do have SP6a installed on my server, I have also followed many MS
> recommendation for security. (tips welcome :)
>
> When I use the same program on IIS on port 80, the CPU does go up a
little,
> but memory usage does not change and IIS does not crash.
>
> Imail seems to be super sensitive to these attacks!
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Ted Galerneau
> Sent: Thursday, April 06, 2000 1:33 AM
> To: [EMAIL PROTECTED]
> Subject: RE: [IMail Forum] DoS and imail
>
>
> Do you have your NT server setup with the latest patch to protect it from
> these attacks? Try running the same attack against your server port 80,
> assuming it is up and functional as a web server. If it still causes
> problems then you can safely assume that is NT specific On the other hand,
> if these attempts don't cause a problem, you can safely assume there is a
> problem with the Imail software.
>
> I would be really curious about what you find. I am testing Imail myself
> right now, trying to access whether or not it would be a good choice for
our
> growing web business. IMail seems to be a really good program so far, but
> this is not something I have tested.
>
> Ted Galerneau,
> Ironwood Express Web Services
> Email [EMAIL PROTECTED]
> (206) 444-4912
> (800) 559-3424
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Omar K.
> Sent: Thursday, April 06, 2000 12:01 AM
> To: [EMAIL PROTECTED]
> Subject: [IMail Forum] DoS and imail
>
> I just recently bought Imai 6.03 and im running it on NT4 server SP6a, and
> like every product I install on the server, I wanted to test it against
> Denial of Service attacks.
>
> I used a utility called "port F***" which available right here :
>
http://link.box.sk/link.php3?rid=15263&url=http%3A%2F%2Fnewdata.box.sk%2Fnew
> order%2Fnukes%2Fportfuck.zip
>
> I made the program send SYN and connect/disconnect packets to the SMTP and
> POP ports, and the results are: Both services crash (will restart if you
> have them set this way) and the CPU usage goes to 100%. Results are even
> more devistating if you start more than one session of the program.
>
> is IPswitch aware of this problem? What do you suggest to minimize this
> threat?
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
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