Hi
I'm unable to get the SMTP Proxy with Transparent mode "ON" working.
I have an SBS 2003 (Exchange 2003) Server on my Internal network and I am required to send email through my ISP Smarthost.
The Exchange server is setup to send via the ISP Smarthost and this works with the SMTP Proxy turned off, this also works with relay turned on for this host and smarthost configured in asl and worked under earlier 7.0x.
I use a DynDNS host name and emails are sent as *.dnydns.net as the ISP requires reverse DNS Lookup.
When I turn on the "Transparent mode" I get "#5.5.0 smtp;550 Relay not permitted".
What am I missing.
Thanks for any help.
Mark
(I hope I have everything covered here)