> -----Original Message-----
> From: David [mailto:david@ols.es]
> meybe it's not a bounce but somebody trying to validate your address
> using callouts or somebody trying to verify that your domain is RFC
> compliant and accepts mail to postmaster. do you reject at
> after rcpt to or after data/predata ?
After rcpt to. Callouts to an address other than the one you're receiving
mail from are, in my opinion, broken. If they're trying to see if I accept
mail to postmaster, they should use a non-empty envalope sender.
I don't do this on all my domains, just ones where I've gotten excessive
backscatter spam to postmaster, abuse, etc.
