Hi to all, my problem is this:

i have on esmtp headers advertisement DSN enabled; when some domain request DSN to my system correct response through bounce.cf template is sent to sender but in r4esponse i receive this:

<xx....@iisap.it>: failed after I sent the message.

Remote host said: 550 5.7.512 Access denied, message must be RFC 5322 section 3.6.2 compliant and include a valid From address

Someon can help me to resolve this issue, if it's an issue because i think that DSN must contain empty return-path.... Am i wrong?

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