Over here we use an outside service to pass mail to our XMail box; somewhat similar to your setup. We can then specify only certain IP addresses that can send to port 25 on the XMail box.
If you're running XMail on Linux then you can use the IPTables firewall to restrict access. I'm sure on a Windows machine you can do similar. Adrian Hicks -- MIS & Facilities Manager Auston Int'l Group Ltd 45 Middle Rd, #01-00 Auston Unicentre Singapore 188954 Tel (65) 6334 5900 ext. 229 Fax (65) 6339 7600 E-mail [EMAIL PROTECTED] On Thursday 15 Jul 2004 6:16 am, you wrote: > > If you have a publicly accessable IP address on your server it will > > always be open to smtp traffic regardless of MX records. Does your > > Barracuda device also contain a stateful firewall? > > "Firewall" is perhaps too strong of a word for what the Barracuda does - it > accepts incoming SMTP connections with recipients in domains that we host, > does spam filtering and virus scanning, then relays it to our XMail server. > It does not have separate network interfaces, does not proxy POP3 > connections, and does not relay mail to any other server not specified in > it's configuration. > > We need to maintain our public IP address for our XMail server, as we > provide e-mail service to a number of our customers, including > authenticated SMTP relay. I guess what I'm really looking for is a way to > configure XMail to only accept incoming SMTP connections if they are (A) > authenticated or (B) from a trusted subnet. > > According to the docs, it appears that adding [SmtpConfig] "mail-auth" to > my SERVER.TAB might work, but it doesn't state whether SMTPRELAY.TAB > entries will bypass this check, and I don't currently have a system to test > this on, and I'd rather not play with the config on our production system. > > Again, any insight is appreciated. Thanks! > > Kirk > > - > To unsubscribe from this list: send the line "unsubscribe xmail" in > the body of a message to [EMAIL PROTECTED] > For general help: send the line "help" in the body of a message to > [EMAIL PROTECTED] > > --- > [This E-mail was scanned for viruses.] - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
