RE: Security High

[Pacheco, Michael F.]

Without knowing how you have sendmail setup that's a pretty big question with very little to go in giving you an answer.  One place to start is DNS - you have limited your ports to 25 and 110 - but sendmail needs to resolve the MX record of any domain its sending to in order to get the mail server of that domain.  If you are not allowing port 53 udp for client query or 53 tcp for server queries. Start by trying to resolve MX for a domain your trying to mail to - fix that then go from there.   Mike   -----Original Message----- From: Deleo Paulo Ribeiro Junior [mailto:[EMAIL PROTECTED] Sent: Friday, February 28, 2003 1:40 PM To: Lista RedHat Subject: Security High   Hello!   I am using firewall with the option "high" selected. Despite of especifying that ports 25 and 110 are allowed to be used (tcp and upd) the sendmail servide does not work.   Anyone knows what is the problem?   Thank you   Eng. Deleo Paulo Ribeiro Junior 55 48 231-1637 55 48 233-0081 [EMAIL PROTECTED] ICQ 14055069