Re: [Asrg] [1] Why SPAM is worse in SMTP than in other protocols

["Za'mbori, Zolta'n" <zamboriz@axelero.hu>]

Alan DeKok wrote:
>   That, alone, says that the vast majority of spam is abusive of SMTP,
> as SMTP is not a one-way message delivery protocol.
IMHO SMTP is a "move the message closer to the recipient mailbox" 
protocol. On the SMTP level there are no such thing like one-time 
one-way or two-way. (MTA is comparable to a router. And non-firewall 
routers does not know about sessions.)


And something about the subject:

SMTP compared to other protocols is more attackable because there are no 
rules assigned to email addresses while there are rules assigned to 
ports. (For example nobody can use a DNS service as an NTP service.)


z2


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