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

 

Hi,

 

 

thanks for the quick reply - I already tried it at that point. But this will only let me change the domain, not the user.

 

I am only interested in changing the part before the @. Changing the domain is working just fine.

 

Thanks though....

 

 

Cheers,

 

Stephan

Sorry, jumped the gun on that... :-)

 

 

The way to set that up is to add this line to your main.cf file:

 

echo "smtp_generic_maps = hash:/etc/postfix/generic" >> /etc/postfix/main.cf

 

 

Then create the map:

 

echo "root@localhost fromMe@mydomain.com" > /etc/postfix/generic

 

 

Then apply the map:

 

postmap /etc/postfix/generic

 

 

Then restart postfix (bigstart restart postfix on the LTM)

 

 

This works on ubuntu (minus the bigstart command), but doesn't change the behavior on the F5 at all. Drat!

 

 

 

maybe Support can help?

Hi,

 

 

I finally found the bullet:

 

the map (e.g. /etc/postfix/generic) also needs to be listed as following parameter in main.cf

 

 

sender_canonical_maps = hash:/etc/postfix/generic

 

 

Then restart postfix and -abracadabra-......

 

 

Thanks for leading me the way! :-)

 

 

Best Regards,

 

Stephan

Excellent work, thanks for posting back!

Hmm, still no change for me, I still get the root. Can you post your config, and your LTM version? Thanks

OK - I tried several things before so maybe they work in co-incidence:

 

LTM-Version is 9.4.4 Build 73.1 HF1

 

 

all my examples are to understand as myuser@mydomain.com

 

just replace those with your user / domain

 

 

config:

 

in /etc/postfix/aliases:

 

I changed any alias from root to myuser, the last one as well -> root: myuser

 

Then use the command 'newaliases' to rebuild aliases.db

 

 

in /etc/postfix/canonical:

 

root myuser@mydomain

 

root@bigIPs_hostname myuser@mydomain

 

root@localhost myuser@mydomain

 

root@mydomain myuser@mydomain

 

root@mydomain.com myuser@mydomain

 

 

then create the map with postmap /etc/postfix/canonical

 

 

in etc/postfix/main.cf:

 

mydomain = mydomain.com

 

myorigin = $mydomain

 

relayhost = [ip.of.your.smtpserver] (mind the brackets)

 

sender_canonical_maps = hash:/etc/postfix/canonical

 

alias_maps = hash:/etc/postfix/aliases

 

alias_database = hash:/etc/postfix/aliases

 

 

then, restart postfix.

 

From that point, it worked for me...

 

 

Best Regards,

 

Stephan

sorry - for canonical i meant:

 

 

root myuser@mydomain.com

 

root@bigIPs_hostname myuser@mydomain.com

 

root@localhost myuser@mydomain.com

 

root@mydomain myuser@mydomain.com

 

root@mydomain.com myuser@mydomain.com

OK, with your lead, I was able to get this to work with this minimal configuration:

 
 echo "" >> /etc/postfix/main.cf 
 echo " Customized for SMTP Sender Identification" >> /etc/postfix/main.cf 
 echo "" >> /etc/postfix/main.cf 
 echo "relayhost = 192.168.1.2" >> /etc/postfix/main.cf 
 echo "sender_canonical_maps = hash:/etc/postfix/canonical" >> /etc/postfix/main.cf 
  
  
 echo "root LTM1@domain.com" > /etc/postfix/canonical 
 echo "root@LTM1 LTM1@domain.com >> /etc/postfix/canonical 
 echo "root@localhost LTM1@domain.com >> /etc/postfix/canonical 
 echo "root@domain LTM1@domain.com >> /etc/postfix/canonical 
 echo "root@domain.com LTM1@domain.com >> /etc/postfix/canonical 
  
 postmap /etc/postfix/canonical 
 bigstart restart postfix 
 echo TEST | mail -s TEST me@domain.com 
 

Note that the display name (in Outlook anyway) still shows root, but the mail source address is LTM1@domain.com

Hello.

 

 

I know I'm waking up a quite old thread, but...:

 

In my case I would rather just change the sender for the F5-related messages,

 

not just any system-related mail. For example when the EM (Enterprise Manager)

 

notifies about expiring certificates, those mails should not come from root,

 

but I can't find any possibility of tweaking that. Anybody got any ideas ?

 

 

/Per