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cd /opt/mailcow-dockerized/
docker compose stop solr-mailcow

cd /var/lib/docker/volumes/mailcowdockerized_solr-vol-1/_data/
rmdir snapshot_metadata
rm -rf index
rm -r tlog

cd /opt/mailcow-dockerized/
docker compose restart solr-mailcow

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SMTP relay from cpanel and mailcow as smarthost

cpanel

https://blog.cpanel.com/how-to-set-up-a-smarthost-smtp-relay-with-cpanel/

mailcow

nano /opt/mailcow-dockerized/data/conf/postfix/extra.cf

mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 [fe80::]/10 172.22.1.0/24 [fd4d:6169:6c63:6f77::]/64 192.168.2.0/24

https://mailcow.github.io/mailcow-dockerized-docs/u_e-postfix-trust_networks/

https://support.cpanel.net/hc/en-us/articles/360051894014-Clear-Exim-Retry-DB-to-bypass-retry-time-not-reached-after-fixing-an-issue-with-delivery

/usr/local/cpanel/scripts/exim_tidydb
mv -vi /var/spool/exim/db/retry{,.$(date +%s)}
mv -vi /var/spool/exim/db/retry.lockfile{,.$(date +%s)}
/scripts/restartsrv_exim

https://i.riken.jp/download/sites/2/Mailman_manual_en.pdf

nano /etc/sysctl.conf

#################NOTE ################ ##

You are limited by CPU and memory too

# ###########################################

dev.raid.speed_limit_min = 50000

## good for 4-5 disks based array ##

dev.raid.speed_limit_max = 2000000

## good for large 6-12 disks based array ###

dev.raid.speed_limit_max = 5000000

https://www.cyberciti.biz/tips/linux-raid-increase-resync-rebuild-speed.html

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tail /usr/local/cwpsrv/logs/error_log

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