On Thu, 2003-10-09 at 21:08, Jim Popovitch wrote:
On Thu, 2003-10-09 at 12:17, Dustin Trammell wrote:
I ran my own outbound mail server on
my local network at home, and pulled my inbound mail from various
sources. It has worked great for years (as the Internet was intended to
be used, I'll agree)
my $.02
I have to disagree with this statement. The Internet, specifically SMTP
in this case, was never fully intended (nor designed) for direct
end-to-end email delivery. It was designed, again speaking about SMTP,
for reliability and scalability with end users using their upstream
mailserver(s) for communications.
Back in the days when CPU cycles and network bandwidth were at a
premium, handing off the sometimes slow process of talking to a system
half the planet away (with sometimes a UUCP hop or 10 in the process)
made lots of sense.
Today, with virtually every potential destination permanently connected
by enough bandwidth that they can handle hundreds of worms along with my
few hundred bytes with ease, my SMTP server is far faster and more
reliable than that of my ISP for a number of reasons, not the least of
which is that I don't honestly think they know how to make e-mail work
for large numbers of users (and, yes, I do)
When I'm delivering directly to my destination (another person with an
MTA equipped workstation with either a fixed or dynamic DNS capable
address) I can ignore things like maximum file sizes and send next
generation stuff - like gigabyte plus video files and such when we're
working on projects. Try and get that through Yahoo ;)
The reaction of (some) MTAs in blocking incoming from large blocks of
dial/dhcp (residential) addresses may continue for some time though so
in the mean time we have to expect the MTAs will handle most of the
traffic; but don't lock out the direct transmission because it works!
Network routing protocols adhere to this same principal. Just like, you
must rely on your upstream provider's gateway to handle packets, you
should rely on your uptsream provider's email server to deliver your
email.
I would rely on their MTA - if it were reliable and even a little bit
responsive. My mean time to deliver is less than a minute 99% of the
time. Theirs is something closer to 30 minutes 50% of the time with
bursts to 4 hours plus.
richard
--
Richard C. Pitt C.E.O. Belcarra Technologies
richard(_at_)belcarra(_dot_)com direct: 604-644-9265 www.belcarra.com
Embedded Systems Communications Specialists - USB, ATM, LAN/WAN, Wireless
USB for Linux, Windows, MAC OS/X - USBLAN (tm) - drivers for USB mass storage
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