Well, I'm deciding my final service installation: Port 25: ---------- smtp with smtpauth (starttls required) support (optional). The idea is use this port for allow only traffic beetween mailservers with MX pointers (I think that all "good" mailserver have it).
RCPTCHECK="" (verify if rcpt account exist) BADRCPTDELAY="3" (delay when detect a try of send to non-existent account) TARPITCOUNT="10", TARPITDELAY="2", (delay when detect masive recipients -more than 10-) RBL="", (check ip, if it is in a RBL list, reject) SANITYCHECK="", (check correct syntax for "mail from" and "rcpt to" -using rcpt-sanity patch by Aiko Barz-) BLOCKRELAYPROBE="", (block some stupid relay probes) RETURNMXCHECK="", (check if domain use in "rcpt to" exist) REQPTR=", (check if IP wich connect to my server have DNS registered - I hope with this, accept connection only from mailservers-) Without relay, only for incoming mail. Port 465: ------------ SSL tunnel, auth required. Relay for my users. Port 995: ----------- pop3-ssl What do you think about? Advices? Am I wrong in anything? why? Thank you very much! ______________________________________________________________________ Correo gratis de Pobladores.com Ahora con 25MB de capacidad. http://www.pobladores.com/services/webmail
