Hi Nick, I did not understand why you said that. I mentioned Exchange as an example, not as an obligation.
Anyway, would you enlighten me about your statement ? I have Exchange installed in at least 10 customers, and all of them work just fine. Maybe the Exchange installations you saw were not correctly configured. Regards, Romulo M. Cholewa http://www.rmc.eti.br PGP Keys Available @ website. � "Without facts, the decision cannot be made logically. � � You must rely on your human intuition." -- Spock |-----Original Message----- |From: [EMAIL PROTECTED] |[mailto:[EMAIL PROTECTED]] On Behalf Of Nick Simicich |Sent: Thursday, April 25, 2002 1:07 AM |To: [EMAIL PROTECTED]; |[EMAIL PROTECTED]; 'Clifford Thurber' |Cc: 'Binaya D. Joshi'; [EMAIL PROTECTED]; 'Chris Lee' |Subject: RE: blocking telnet to port 25 | | |At 09:54 AM 2002-04-24 -0300, Romulo Cholewa wrote: |>You can use a proprietary email server that rely on RPC |connections, and |>force smtp authentication (ex. Exchange). |> |>This will provide you with the results I think you need. | |What, the inability to talk to anyone in the world who is not |running exchange? | |>Romulo M. Cholewa |>http://www.rmc.eti.br |>PGP Keys Available @ website. |> |> "If a technology does not seem like magic, that's |> because it's not good enough." |> |> |> |> |>|-----Original Message----- |>|From: [EMAIL PROTECTED] |>|[mailto:[EMAIL PROTECTED]] On Behalf Of |>|[EMAIL PROTECTED] |>|Sent: Wednesday, April 24, 2002 2:32 AM |>|To: Clifford Thurber |>|Cc: Binaya D. Joshi; [EMAIL PROTECTED]; Chris Lee |>|Subject: Re: blocking telnet to port 25 |>| |>| |>| |>| |>|could you fingerprint the source port? |>| |>|-C |>| |>|=-=-=-=-=-=-=-=-=-=-=-=-= | |>|0100111001101111011100110110010101111001 |>|Christopher Regenye | |>|System Services | I know you believe you understand what you |>|PR Newswire | think I said, but I am not sure you |realize that |>|christopher_regenye | what you heard is not what I meant. |>| @prnewswire.com | |>|=-=-=-=-=-=-=-=-=-=-=-=-= | |>|0111010000100000010110010110111101110101 |>| |>| |>| |>| |>| |>||--------+----------------------------> |>|| | Clifford Thurber | |>|| | <cthurber@edisonsc| |>|| | hools.com> | |>|| | | |>|| | 04/10/02 10:56 AM | |>|| | | |>||--------+----------------------------> |>| |>|>-------------------------------------------------------------- |>|----------------| |>| | |>| | |>| | To: "Binaya D. Joshi" <[EMAIL PROTECTED]>, Chris |>|Lee | |>| | <[EMAIL PROTECTED]> |>| | |>| | cc: [EMAIL PROTECTED], (bcc: Christopher |>|Regenye/PR Newswire)| |>| | Subject: Re: blocking telnet to port 25 |>| | |>| |>|>-------------------------------------------------------------- |>|----------------| |>| |>| |>| |>| |>| |>|You can't block telnet to port 25 you can either block port 25 |>|or port 23 but thats it. SMTP is a mail protocol it does not |>|care how the connection to the IP/port pair was established as |>|long as it follows the SMTP protocol(i.e issues Helo, Mail |>|From: Rcpt To: etc.) |>| |>| |>|At 04:14 PM 4/10/2002 +0545, Binaya D. Joshi wrote: |>|>blocking telnet to port 25 in mail server... huh ??? |>|> |>|> if so; may be this be the last mail u r be receiving :) |>|> |>|> |>|> |>|>B.D.Joshi |>|> |>|> |>|>On Wed, 10 Apr 2002, Chris Lee wrote: |>|> |>|> > If you want mail to through, you can't. |>|> > |>|> > Chris |>|> > |>|> > Sayed Peerzade wrote: |>|> > |>|> > > Hello, |>|> > > |>|> > > I'm systems engineer in an ISP handling mail servers, i also |>|> > > handle checkpoint. pls tell me how to block telnet to port 25, |>|> > > keeping normal telnet to perform normally on mail server |>|(netscape |>|> > > messaging server running on solaris OS)) |>|> > > u can tell me method to block either in checkpoint or on |>|mail server |>|> > > itself. |>|> > > Thanks and regards. |>|> > > |>|> > > Sayed K.Peerzade. |>|> > > |>|> > > _______________________________________________ |>|> > > Firewalls mailing list |>|> > > [EMAIL PROTECTED] |>|> > > http://lists.gnac.net/mailman/listinfo/firewalls |>|> > |>|> > _______________________________________________ |>|> > Firewalls mailing list |>|> > [EMAIL PROTECTED] |>|> > http://lists.gnac.net/mailman/listinfo/firewalls |>|> > |>|> |>|>_______________________________________________ |>|>Firewalls mailing list |>|>[EMAIL PROTECTED] |>|>http://lists.gnac.net/mailman/listinfo/firewalls |>| |>|_______________________________________________ |>|Firewalls mailing list |>|[EMAIL PROTECTED] |>|For Account Management (unsubscribe, get/change password, etc) |>|Please go to: http://lists.gnac.net/mailman/listinfo/firewalls |>| |>| |>| |>|_______________________________________________ |>|Firewalls mailing list |>|[EMAIL PROTECTED] |>|For Account Management (unsubscribe, get/change password, etc) |>|Please go to: http://lists.gnac.net/mailman/listinfo/firewalls |>| |> |>_______________________________________________ |>Firewalls mailing list |>[EMAIL PROTECTED] |>For Account Management (unsubscribe, get/change password, |etc) Please go to: |>http://lists.gnac.net/mailman/listinfo/firewalls | |-- |War is an ugly thing, but it is not the ugliest of things. The |decayed and |degraded state of moral and patriotic feeling which thinks |that nothing is |worth war is much worse. A man who has nothing for which he is |willing to |fight, nothing he cares about more than his own personal safety, is a |miserable creature who has no chance of being free, unless |made so by the |exertions of better men than himself. -- John Stuart Mill |Nick Simicich - [EMAIL PROTECTED] | |_______________________________________________ |Firewalls mailing list |[EMAIL PROTECTED] |For Account Management (unsubscribe, get/change password, etc) |Please go to: |http://lists.gnac.net/mailman/listinfo/firewalls | _______________________________________________ Firewalls mailing list [EMAIL PROTECTED] For Account Management (unsubscribe, get/change password, etc) Please go to: http://lists.gnac.net/mailman/listinfo/firewalls
