Hi,

Please can someone help me with Sendmail v8.13.8 on Fedora Core 6?

I have built this Fedora box to serve as my antispam & antivirus email gateway for my existing MS Exchange 2003 email server.

All I want Sendmail to do is to route all external email to a smarthost (Smarthost IP is 172.31.3.28) and route all inbound email to the Exchange server (Exchange IP is 172.31.3.34).

I don't want any mail to be stored on the Fedora Sendmail box, all I need is to route mail between the outside world and the inside Exchange server (scanning it for spam & viruses in the process).

This Fedora box does not have a public IP address, as it sits behind an ISA firewall that handles the email to & from the outside world (this is the smarthost with the IP 172.31.3.28)

Please can you give me some advice or point me to a guide that I can use to get this working?

Any help or advice is gratefully received ;-)

Thanks in advance.

Kind Regards,

Greg.

First find the line in /etc/mail.sendmail.mc that looks like this:

and change it to:

the smtp.your.provider should be the fully qualified domain name of the Exchange server that will handle outbound mail.

Next you'll need to find the 'mailertable' line in /etc/mail.sendmail.mc and check that it looks exactly as it appears here.

Save this file.

Edit the file /etc/mail/mailertable and put in a line like this:

where the IP Address is that of the Exchange server that will handle mail your your domain (my-domain.com).

Last, do 'make -C /etc/mail' to regenerate the sendmail.cf, and the mailertable.db (and any other sendmail configs that need to be regenerated). You'll also need to restart sendmail since you've created a new cf file.

That's it.. you can start testing using 'sendmail -bv recipient@domain to figure out what sendmail is going to do with the mail.