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Old 08-14-2008, 12:50 PM   #1
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Registered: Nov 2007
Location: Calgary, AB, Canada
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Smile Basic sendmail question

Hi all,

Where do I define my 'reply to' address in sendmail configuration?

Whenever I send mail out (using 'mail' or 'sendmail') from my Linux box, it will be received as sent by 'root@xxx.local'
Where can I define something different, like my real email address?


Old 08-14-2008, 01:15 PM   #2
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It's usually defined by the official domain name configuration, default configurations will usually use the FQHN.
Old 08-14-2008, 01:36 PM   #3
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Thanks trickykid

Either I didn't ask properly, or I was misunderstood...

I'd like to know where do I define my 'real' or 'valid' email address to show as 'from' or 'reply to' whenever I send a mail out from my Linux box using mail or sendmail command line.

There should be a configuration file for sendmail where you can define things like this. I need to know what this file is so I can edit it and change the default 'root' mail address to whatever I need it to be.


Old 08-14-2008, 01:49 PM   #4
Registered: Feb 2005
Distribution: Ubuntu, CentOS
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Edit 1:
I do not know which field to touch offhand. These are instructions for compiling and restarting sendmail. has some documentation in it.
End Edit 1:

Usually, is found in /etc/mail.

As root in /etc/mail

# cp
# cp


# m4 >

# /etc/init.d/sendmail restart (Debian)
# /etc/rc.d/init.d/sendmail restart (Red Hat)

You'll need some good online documentation for this or "the bat" book, that huge book of O'Reilly's.

Edit 2:

I use

MASQUERADE_AS(`node1.node2.') dnl

to provide our full email domain name when sendmail is sent off our Linux servers. However, this does not cover your original question. Sorry.

Last edited by cmnorton; 08-14-2008 at 01:56 PM. Reason: Add info; add some more info


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