sender address in eMails sent by postfix

Edit /etc/postfix/main.cf:

 

 

SENDING MAIL

 

 

The myorigin parameter specifies the domain that locally-posted

 

mail appears to come from. The default is to append $myhostname,

 

which is fine for small sites. If you run a domain with multiple

 

machines, you should (1) change this to $mydomain and (2) set up

 

a domain-wide alias database that aliases each user to

 

user@that.users.mailhost.

 

 

For the sake of consistency between sender and recipient addresses,

 

myorigin also specifies the default domain name that is appended

 

to recipient addresses that have no @domain part.

 

 

myorigin = $myhostname

 

myorigin = $mydomain