Set up masquerading  in AIX 7.2 TL 5 and later

To enable the masquerading, it is necessary to build a submit.cf implementing this feature with the following procedure:

 

cd /usr/samples/tcpip/sendmail/cf

cp submit.mc submit-masquerade.mc

vi submit-masquerade.mc

At the end of the file, the following line needs to be added:

 

MASQUERADE_AS(`masquerade.domain.com')

The special syntax of the single quotation marks needs to be observed. After the file is saved, it can be compiled:

m4 ../m4/cf.m4 submit-masquerade.mc > /tmp/submit.cf

If there are no errors, the submit.cf file can be installed:

cd /etc/mail

mv submit.cf submit.cf.org

cp /tmp/submit.cf .