Any light anyone can throw on the 'nobody@myserver.com' address would be
most welcome.
It is using the apache user @ your host name as the default. Try this:
ini_set('sendmail_from', 'whatever@wherever.com');
I will try this but I do not understand why it should work. I have a 'From:...' entry in my headers. Why is this not being used as the primary from address and why is 'nobody@myserver.com' being added instead as the first from address ? In other words, I can understand if I supply no 'From:...' header entry that a default 'nobody@myserver.com' would be used but I do not understand why it is used even when I supply a 'From:...' header entry.
"From: " is used by your mail client to show who it's from.
the ini_set (or you can set the 5th param to the mail() function) is a return-path. If the message bounces (recipient's mailbox full, server down, whatever the reason) it gets delivered to that address. They serve different purposes.
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