Re: 553 on mail adresses with ' character

On Thursday 03 February 2005 14:56, den_RDC might have typed:

> , and i receive the 533 error in my telnet session. I can only guess this
> means that someone-something along the way is changing my commands (a
> firewall/proxy maybe), even though i open a direct telnet session to the
> receiving mailserver (the company server)
> Is this possible?

A 'direct' session can easily get bounced across a firewall or 10 before it
reaches your server.

The Cisco PIX has a notorious 'security' measure called smtp fixup. It does
all sorts of silly things to SMTP sessions. I wouldn't doubt that there are
other firewalls that do that. I'm still trying to work out why a customer of
ours gets \n.\n randomly in the middle of mail they send - the last culprit
is the firewall, but they swear they don't have a proxy on it!