Y carbon copY Optional, and only in Mail messages.
0 Error This field is typically never found in a message on
disk or in transit. Message scanning modules are
expected to fill in this field when rejecting a message
with an explanation as to what happened (virus found,
message looks like spam, etc.)
Y carbon copY Optional, and only in Mail messages.
0 Error This field is typically never found in a message on
disk or in transit. Message scanning modules are
expected to fill in this field when rejecting a message
with an explanation as to what happened (virus found,
message looks like spam, etc.)