Re: SMTP Fixup -- On or Off???

From: Sam (sam_at_email-scan.com)
Date: 03/31/05


Date: Thu, 31 Mar 2005 06:13:51 -0600


papem@union.edu writes:

> Our SPAM solution provider (Canit) says to shut off the SMTP fixup
> option on our Cisco PIX 525 firewall. From what I've read on-line, a
> lot of sites are turning this option off, however our network

Correct. This so-called “option” is a known laughing stock. It basically
screws up all SMTP connections, without really getting of value in return.
It's just pure luck that some SMTP sessions manage to complete succesfully,
despite Cisco's best efforts otherwise.

> administrator is against doing this and feels that it is a substantial
> security risk.

Fire your network administrator, for incompetence, and hire someone who
knows what he's doing.

> Is shutting off the SMTP fixup option a large security risk? Larger or

No. Do you even know what this “SMTP fixup option” really does?






Relevant Pages

  • Re: SMTP Fixup -- On or Off???
    ... > option on our Cisco PIX 525 firewall. ... > lot of sites are turning this option off, ... screws up all SMTP connections, without really getting of value in return. ... Fire your network administrator, for incompetence, and hire someone who ...
    (comp.security.firewalls)
  • Re: help file transfer
    ... exact same message and I'm only trying to send a photo. ... believe there is a Firewall setting somewhere that needs to be ... > network administrator or Internet service provider. ... >> MSN Messenger File Transfer from the USA to Belgium. ...
    (microsoft.public.windowsxp.messenger)
  • Re: network administrator
    ... Conflicts start where information lacks. ... Suggested posting do's/don'ts: http://www.dts-l.org/goodpost.htm ... You can only turn off the network administrator by offending him or her. ... If the popup message is during boot don't fret, it's a common message if security is checked before the firewall is actually enabled. ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: Hacking into firewall
    ... > try and access the sites which we are denied access into?? ... Ask your network administrator the following questions, ... What type of network operating system is used to run the firewall? ...
    (microsoft.public.inetserver.iis.security)
  • Re: Cannot send/receive mail from inside my firewall
    ... >i am new to linux and have set up a firewall but can only access the ... the default installation of Sendmail is set to listen to ... And, if that wasn't enough, RedHat installs IPTables by default on your ... and that's probably going to prevent SMTP connections to your ...
    (comp.security.firewalls)