UNIX for Dummies Questions & Answers

Hello,

So i want to get rid of "X-Authentication-Warning" when sending out mails with modified returnadress/senderadress

ie. when executing "cat test.email | mailx -t -r me@www.tld" (in test.email theres given To, Subject and textmailcontent")

- yet it says "UNIXUSER set sender to me@www.tld using -r" -whenever i use this function -r either with mailx or sendmail (same same).


Can anyoe help me out ?

It should work if you configure the sending (unix) user to be a trusted user in sendmail. By default sendmail does not allow "just anyone" to rewrite the headers on mails without flagging this.

The default file is /etc/mail/trusted-users

Add the following to sendmail.mc

Code:

FEATURE(`use_ct_file')

add the following if you want ot use a different file:

Code:

define(`confCT_FILE', `/etc/mail/trusted.list')

If you want the file to optionally exist:

Code:

define(`confCT_FILE', `-o /etc/mail/trusted_users')

otherwise sendmail will not start if the file is missing.

rebuild your sendmail.cf
restart sendmail

thanks, currently only root is in the mail trusted users.

i found out that the certain xauth warning can be avoided when calling sendmail with -t flag, to search for To: Subject: and stuff like that in a mailfile. Somehow Return-adress is not being modified as wanted. Do you think this could be changed if im gonna be trusted ?