"As discussed in Section 7.8 and Section 7.9 below, dropping mail without notification of the sender is permitted in practice."
http://tools.ietf.org/html/rfc5321#section-6.2
"As discussed in Section 7.8 and Section 7.9 below, dropping mail without notification of the sender is permitted in practice."
http://tools.ietf.org/html/rfc5321#section-6.2