mailq Behave as if the option -bp were present before any other options. The -bp option requests a listing of the contents of the mail queue on the standard output

mailq is the right answer

mailq ist the answer according to lpic study guide

The command mailq is equivalent to sendmail -bp, and they should be present regardless of the MTA installed in the system. https://learning.lpi.org/en/learning-materials/102-500/108/108.3/108.3_01/

mailq According to Japanese LPI official guide.

SENDMAIL - Yes it does meet the requirements to be the answer - as question clearly said DO NOT include any parameters meaning they know the required command does require parameters otherwise would not state it and would rather state Just write the command..so correct answer is SENDMAIL but i believe if either SENDMAIL or mailq were answered you still get the credit for it as both answers are correct Question with answer from LPIC study guide Which command can the root user execute to list the undelivered messages that originated on the local system? The command mailq or sendmail -bp. from page 372 Also the following comments The command mailq is equivalent to sendmail -bp, and they should be present regardless of the MTA installed in the system. To ensure backward compatibility, most MTAs provide these traditional mail administration commands.

Think the answer is wrong, it should be sendmail (without the parameters -bp) see this site: https://learning.lpi.org/en/learning-materials/102-500/108/108.3/108.3_01/

answer is wrong, correct is " sendmail -bp"