Re: Delivery Status Notification

[postfix]

    $ postconf smtpd_discard_ehlo_keywords
    smtpd_discard_ehlo_keywords = pipelining, chunking, 
silent-discard, DSN, ETRN

Why did you decide to turn off PIPELINING and CHUNKING?

Based on the last paragraph of BDAT_README.html I do not see any benefit 
of offering it and I assume disabling it could remove an avenue of 
abuse. I also have reject_unauth_pipelining in smtpd_data_restrictions. 
Am I causing myself a disservice by disabling it?