Update README.md

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@@ -3,15 +3,15 @@ Postfix is used as the SMTP server and Dovecot is used as the IMAP server
TLS certs are obtained via lets encrypt TLS certs are obtained via lets encrypt
OpenDKIM is used for signing paired with spamassassin for mail filter OpenDKIM is used for signing paired with spamassassin for mail filtering
A custom self-written Bash script is used to parse logs and automatically drop connections from offenders with iptables A custom self-written Bash script is used to parse logs and automatically drop connections from offenders with iptables
## Extremely useful tools in debugging ## Extremely useful tools in debugging
- postfix check - postfix check (Linux command)
- doveconf -n - doveconf -n (Linux command)
- https://www.appmaildev.com/en/dkim - https://www.appmaildev.com/en/dkim