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VPN no longer working, Laptop woes on the road »

nixen
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Re: Any restriction is a service downgrade

said by jaa See Profile:
I just don't see why this is an issue. The problem is that port 25 has 2 uses: mail server to server transfer, and mail client to server transfer. Should have been using two different ports from the beginning.
SMTP is much older than any of the client mail protocols (e.g. POP). So, there was never any call for a "client" port in the original specification. SPAM was a fairly non-existent problem when POP was first created, so there still wasn't a compelling reason to add a client-specific port for SMTP trafficing.

-tom
--
"There are 10 types of people in the world... those who understand binary and those who don't."
"That's only 2 types of people, moron"
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