some cisco firewalls (pix 520 and 515; not sure if others as well) provide
facilities for rewriting connections through certain ports (smtp, sqlnet,
ftp, http). the smtp rewrite is turned on by default. it only allows rfc
822 smtp commands to be passed. any other text that appears in a smtp
conversation where a command should be found is replaced with XXXXX.
On Wed, 11 Apr 2001, John Chapman wrote:
> I am curious. How does the firewall cause this problem?
>
> - John Chapman
> >
> > > Actually it could be a bit more difficult than just the remote host
> > > has sent it twice. If I remember a thread from a few weeks back this
> > > was traced to a bad cisco firewall option being turned on.
> > >
>
> John Chapman
> CNI Consulting
> [EMAIL PROTECTED]
> www.cniconsulting.com
> 817-774-0369
>
