The following is an excerpt from a procmail configuration filE.
:0 c
* ! ^To: backup
! backup
Which of the following is correct?
A.
All mails will be backed up to the path defined by $MAILDIR
B.
All mails to the local email address backup will be stored in the directory backup.
C.
A copy of all mails will be stored in file backup.
D.
A copy of all mails will be send to the local email address backup.
E.
Mails not addressed to backup are passed through a filter program named backup.
E
D is correct.
! before backup(last line) indicates that backup is email address where a copy should be forwarded(which makes E option wrong)
“* ! ^To: backup” condition says – emails which MAILTO address is NOT backup
if this rule would not exist, mailserver would start sending copies of copies to backup.