met@mail:/var/log# cat dovecot.log | grep "trying the next passdb" | awk '{ print $6}' | sed -e 's/sql(//g' | sed -e 's/)://g' | tr , \\t

vm@mail:/var/log# cat dovecot.log | grep "trying the next passdb" | awk '{ print $6}' | sed -e 's/sql(//g' | sed -e 's/)://g' | tr , \\t | sort | uniq -c | awk '{ print $3}' | sort | wc -l
550

svm@mail:/var/log# cat dovecot.log | grep "trying the next passdb" | awk '{ print $6}' | sed -e 's/sql(//g' | sed -e 's/)://g' | tr , \\t | sort | uniq -c | awk '{ print $3}' | sort > /home/svm/ip_ban_20190720.txt