I have a #SysAdmin question: is it okay to use a local, loopback-only SMTP server (#mailutils + #postfix) to allow a local web app to send mails directly? Without any login/passwd?

This works fine:
echo [boty] | mail -s [subject] [dest]

But I can’t make it work from my app (#ApacheAnswer), even though it does have an unauthenticated mode for SMTP. What am I missing?

Argh! I'm trying to do a few things in Linux and every single hit suggests something that I know won't work, and Google keeps offering me the same pointless but incorrect advice.

Lots of subtle differences between the command line options of the various emailers...

#mail #mailx #mailutils