Fernando, #Looking at this subject answers, i've been wondering... #If the problem is telneting to port 25 of your internet-smtp-server, #Maybe if the smtp-server only accepts connections from hosts which are #MX from their domains (i mean: dns ptr check + mx check) #What do you, security people, think of it ? #Is there such a piece of code ? The problem with this solution is that not all legitimate e-mail servers are advertized on the internet with MX records. I may replicate between 10 mail servers all of them can send e-mail out but only 2 are advertized on the internet as receiving mail for my domain. I am sure there are other examples as well. Regards, Jeffery Gieser - [To unsubscribe, send mail to [EMAIL PROTECTED] with "unsubscribe firewalls" in the body of the message.]
