On Tuesday, May 21, 2002, 12:59, Allie C Martin wrote:

> This certainly makes sense. They seem to do a combination of checks.

> I have had no problems at all since I define a valid domain name,
> 'ac-martin.com' when sending mail and I make no effort to mask the
> source IP, which will again turn out to be a valid one though it
> points to my ISP's zone.

Allie, I take our private discussion back on list since it seams like
there is more people interested in this.

I will setup my SMTP-server on a laptop which I will use at at least
three places:

1) at home where I have a static IP with no security at the ISP level,
all security is managed by my own firewall

2) at work where I'll have a dynamic IP which will be obscured by a
NAT

3) at my girlfriends home where I will connect through modem to her
ISP which I suppose use some kind of NAT

Number 1 shouldn't be any problem, I could specify a domain which
resolves to my own IP, but number 2 or 3 would cause problems if
someone try matching the resolved IP with the domain I specify.

Would it make sense if I specify just any valid domain? If I
understand you correctly Allie this is what you have done?

Maybe the easiest solution would be to try this setup myself. My final
question then is, will I notice any problems or could I be in a
position where I believe that the mail has been delivered although
they were rejected by the other side?

-- 
Regards,
Marcus Ohlström

Using The Bat! v1.60i on Windows 2000 5.0 Build 2195 Service Pack 2
PGP Public Key at http://www.canit.se/~marcus/pgp.txt


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