On Wed, Mar 05, 2003 at 07:27:47AM -0500, Alan DeKok wrote:
If getting rid of the "random SMTP sender" problem means that the
roaming user is required to use a home server, then that's fine. It
stops the spammer, and has little cost to the roaming user.
It's even better than having "little costs": It it cheaper than
delivering directly.
I'm doing it this way for several years now and it proved to be
much better than direct SMTP delivery. When I dial in with my
notebook, it opens a uucp over ssl connection to my home server,
to download incoming mail and to upload outgoing mail. Since I use
bsmtp, the mail is compressed.
It has those benefits:
- Single action to down- and upload all messages queued on both
machines. Only a single TCP connection required.
- Much faster than SMTP due to the compression
- Always fully encrypted, no chance for eavesdroppers
- Works without DNS
- doesn't need to wait for other SMTP relays to be available
- doesn't need to wait for other SMTP releays to positively
reply a DATA command which can take several minutes
- Home server is always connected to the internet and automatically
tries to resend the message if the receiving relay is unavailable or
answered a 4xy code.
So having a central home hub does not even cause only little costs,
it is much better, cheaper, faster, and more effective than direct
SMTP delivery.
Hadmut
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