I understood that for changing sender's name with mailx I should do the following:
mailx -r newmail@mail.com -s "some subject" my@email.com
But when I do that, I get:
mailx: invalid option -- r
Usage: mail [-iInv] [-s subject] [-c cc-addr] [-b bcc-addr] to-addr ...
[-- sendmail-options ...]
mail [-iInNv] -f [name]
mail [-iInNv] [-u user
Does anyone knows what's happening? thanks,
The correct syntax is:
mailx -s "some subject" my@email.com -- -r newmail@mail.com
The Usage info shows "[-- sendmail-options ...]" and since "-r" is a sendmail option, you need to use the double dashes first.
mailx -a 'From:name@your-domain.com' -s "Subject" my-best-friend@other-domain.com < text.txt
Tested with this and found to be working:
echo test | mailx -s "Mail Test" user@recipentdomain.com -- -f user@senderdomain.com
The double-dash before "-f" makes the mailx not to parse the -f, but only pass it to sendmail/postfix, which will then send with the "from" address mentioned.
来源：https://stackoverflow.com/questions/14607503/mailx-change-sender-name