FYI: antispam kolpo

[V13]

  Prin apo ligo kairo eftasa sto eksis symperasma (kata tyxh):

  An exeis ena mixanima me hostname A kai MX B, yparxoyn arketoi spammers oi 
opoioi tha prospathisoyn na steiloyn ta spam apeytheias sto A parakamptontas 
ton MX.

  Ayto einai poly kalh plhroforia kai mporei na aksiopoihthei gia na meiothei 
to spam, akomi kai an den yparxei 2o mixanima gia MX. Eksigoymai:

  Xreiazomaste ena mixanima M, to opoio arxika exei ena hostname H1 kai mia IP 
dieythynsi IP1. Bazoyme sto mixanima mia deyteri IP, thn IP2 kai thn 
antistoixoyme sto H2. Sth synexeia orizoyme san MX toy H1 to H2 kai 
mplokaroyme olh th kinisi pros to port 25 toy IP1.

  Den prepei na dhmioyrgisei kanena apolytos problima kai pithanotata tha 
elatosei to spam. To kyriotero poy exo proseksei me ayto to kolpo einai oti 
me to poy to ekana, to sendmail epapse na ftanei to orio toy (p.x. 100 
instances).

  To exo dokimasei me 2 mixanimata, alla den prepei na'xei kamia diafora kai 
me 1 (opos akribos perigrafetai edo).

<<V13>>