David Ballester schrieb: > telnet from my_internal_mail_server_ip to any public_mailserver get > connected with EFW public address. BAD - EFW public address is not > regitered in mx records, a lot of mailservers rejects the connection - >
The public IP address is what you list with a dns service, and its exactly where you want all email servers to connect. You have to set an mx record somewhere to pint to your public address, otherwise the world cant find you. You can't use the internal addresses. The efw acts as a router, and relays all incoming email connections to your server. This is no different than any router. You don't want the efw to accept the connections directly - its not a mail server. > I really need T1, we're receiving a lot of spam and internal mail server > is beginning to trashing ( high cpu and highest cpu_wait ). I've applied > a delay of 30 seconds in my smtp process to 'discourage' some spambots, > but this delay affects end clients trying to send mail, too :/ > T1 lines are slow and expensive, and best used for what they were designed for: telephone voice lines. They are not the best service to use for internet connections, even though many companies do use them for that. Get DSL. Delays don't discourage spam - their servers are very smart and aren't fooled. With MS Exchange, I limit the number of email addresses that one connection can broadcast too. For instance, I set it to accept only 10 recipients per connection. This doesn't stop spam, but it does greatly reduce the high CPU time. Spam servers aren't fooled by this, they simply have to connect a few times to send all their mail, rather than sending it all at once, which can overwhelm a server's cpu. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Efw-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/efw-user
