Solr is installed but disabled in dovecot-config because it crashes dovecot (Enable fulltext search in dovecot)
root@mail:/etc/amavis/conf.d# ulimit -n
65536
root@mail:/etc/amavis/conf.d# ucr search security/limits |grep /limits/
security/limits/default/user/hard/.*: <empty>
security/limits/default/user/hard/nofile: 32768
security/limits/default/user/soft/.*: <empty>
security/limits/default/user/soft/nofile: 32768
security/limits/group/.*/hard/.*: <empty>
security/limits/group/.*/soft/.*: <empty>
security/limits/group/Domain Users/hard/nproc: 1000
security/limits/user/.*/hard/.*: <empty>
security/limits/user/.*/soft/.*: <empty>