Thanks for all the help I received on this. Yes, the X-Authentication-Warning reporting abuse of the sendmail -f switch, went away after I added the following line to submit.mc
FEATURE(`use_ct_file')dnl
and, of course, adding the trusted username (in my case, apache, since that's what my server is running under) to /etc/trusted-users :)
First, make sure this (or something darn near like it) is indeed in /etc/mail/sendmail.cf: Ft/etc/mail/trusted-users %[^\#]
Now, if this process actually winds up invoking sendmail binary vs talking to port 25, you'll also need to add that FEATURE to /etc/mail/submit.mc and remake (no restart required).
Welcome to the world of split personality sendmail :)
I read that the trusted-user feature was entirely disabled in sendmail versions 8.1 through 8.6, but then was revived. Does that have anything to do with it?
No, and I don't recall seeing that, but 'tis been a while :)
I read it in the O'Reilly {Sendmail} book, on page 245. But oh my gosh! I see that my edition of that book was printed in 1994! My, how time flies....
Thanks again,
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