hash map "Alias0": missing map file /etc/mail/aliases.db in FreeBSD jail

Problem:
Jan 18 13:13:44 j-www sm-mta[90213]: q0ILDdMH090213: SYSERR(root): hash map "Alias0": missing map file /etc/mail/aliases.db: No such file or directory

Solution:
# sendmail -bi
# ls -l /etc/mail/aliases.db