qmail log (from field)

[Edward Castillo-Jakosalem]

Hi again to all!
I have a question about the log file. Please look at an entry below.

info msg 205083: bytes 379 from <> qp xxx uid xxxx

As we can see, the from field is empty. Is there a way that we can deny
mails that don't contain 'from' from being relayed? Also is there a way
that we can restrict the sender by the 'from' field? Say if the sender's
domain is not xxx.com, then his mail is denied.

Thanks in advance!


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Edward Castillo-Jakosalem