Rewriting a From Address in Sendmail V8

Posted on 2000-03-14
Medium Priority
Last Modified: 2010-04-21
How can I get sendmail to rewrite the from address.  As an example I have a  mail message going out with a from address of:

I would like sendmail to rewrite the from address to bill@life.com.

No a replay to will not work.  The address is really an aliases to a list of people.   Maybe if there is a way to change the to address in to a bcc address and then create a replay to address that is the one I want???

Question by:brownjohn
LVL 40

Expert Comment

ID: 2616935
You could do it with a custom sendmail rule if the person part was always the same, but that's kind of a lot of work.

How about changing the alias to point to, say a perl script that reads the message, and remails it to the real alias list with what you want as the From: address? That's pretty simple and straight-forward (and I think I've got a perl script around somewhere that that does something awfully close to that)

Expert Comment

ID: 2620037

Will not
  sendmail -f from@address
do the trick?

Or do i miss something?


Accepted Solution

mapc earned 600 total points
ID: 2620586
This could be accomplished by the USERDB
First, sendmail must be compiled with USERDB, this can be checked with sendmail -adda or some other bogus debug flag which will show the  compiled in modules.
If it's not, then you must recompile it.
Then, you use feature(`USERDB')dnl in the .m4 config file, and create a database which consists of:
user <space> mailname: anotheruser
Simple as that.
The sendmail 9.10.0 states that LDAP could be used for *any* database which is used in it, so I haven't verified it, but it should be possible with sendmail 9.10.0 to use LDAP database instead of USERDB which is in DB2 format.
Another use for USERDB is creating entries like:
user<space> maildrop: anotheruser@anotherhost
which accomplishes something similar to aliases/forwarding..
Other way to accomplish what you want is to write manual rule for sender address.
It should have F and 'i' and '@' if I'm not mistaken, but this sort of information should be checked in the book.
Hope that it helps.

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Java performance on Solaris - Managing CPUs There are various resource controls in operating system which directly/indirectly influence the performance of application. one of the most important resource controls is "CPU".   In a multithreaded…
Why Shell Scripting? Shell scripting is a powerful method of accessing UNIX systems and it is very flexible. Shell scripts are required when we want to execute a sequence of commands in Unix flavored operating systems. “Shell” is the command line i…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
This video shows how to set up a shell script to accept a positional parameter when called, pass that to a SQL script, accept the output from the statement back and then manipulate it in the Shell.

597 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question