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Mention lz4 compression in u_e-dovecot-mail-crypt.md #2754, #2337

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Jonas Renggli 2020-05-06 20:36:27 +02:00 committet von GitHub
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docs/u_e-dovecot-mail-crypt.md
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@ -1,4 +1,4 @@
Mails are stored encrypted, the key pair can be found in crypt-vol-1. Mails are stored compressed (lz4) and encrypted. The key pair can be found in crypt-vol-1.
If you want to decode/encode existing maildir files, you can use the following script at your own risk: If you want to decode/encode existing maildir files, you can use the following script at your own risk:
@ -8,7 +8,7 @@ Enter Dovecot by running `docker-compose exec dovecot-mailcow /bin/bash` in the
# Decrypt /var/vmail # Decrypt /var/vmail
find /var/vmail/ -type f -regextype egrep -regex '.*S=.*W=.*' | while read -r file; do find /var/vmail/ -type f -regextype egrep -regex '.*S=.*W=.*' | while read -r file; do
if [[ $(head -c7 "$file") == "CRYPTED" ]]; then if [[ $(head -c7 "$file") == "CRYPTED" ]]; then
doveadm fs get crypt private_key_path=/mail_crypt/ecprivkey.pem:public_key_path=/mail_crypt/ecpubkey.pem:posix:prefix=/ \ doveadm fs get compress lz4:0:crypt:private_key_path=/mail_crypt/ecprivkey.pem:public_key_path=/mail_crypt/ecpubkey.pem:posix:prefix=/ \
"$file" > "/tmp/$(basename "$file")" "$file" > "/tmp/$(basename "$file")"
if [[ -s "/tmp/$(basename "$file")" ]]; then if [[ -s "/tmp/$(basename "$file")" ]]; then
chmod 600 "/tmp/$(basename "$file")" chmod 600 "/tmp/$(basename "$file")"