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Remote mta
Local mta smtp.phas.ubc.ca
1) Virus detection:
- known virus detected:
a) replace virus w warning & deliver
b) original message moved to Quarantine Area
2) Spam Filtering:
- message is scored against various spam detection
rules
SpamScore > 70%
30% < SpamScore <70%
SpamScore < 30%
Move to Quarantine
mail.phas.ubc.ca
- reject unless valid email address
- check for forwarding (/mail/$HOME/.forward)
- apply user defined procmail filters
(/mail/$HOME/.procmailrc)
- deliver to user's inbox
Mail to x@astro.ubc.ca
x@physics.ubc.ca
x@phas.ubc.ca
User's
mail
client
imap or pop
request
Mail
message
Start here &
follow green arrows
Incoming Mail
Deliver unmodified
Flag as Spam & deliver