How to export all domains and accounts in Maildir format?

kantamaru267

I need to export all the data in order to then migrate it elsewhere. How to export all domains and accounts in Maildir format? Or backup them, if this called as such

I’m aware of this https://docs.mailcow.email/backup_restore/b_n_r-backup/ but there’s no mention of Maildir there

DocFraggle

kantamaru267 It’s the ‘vmail’ option:

MAILCOW_BACKUP_LOCATION=/your/backup/path ./helper-scripts/backup_and_restore.sh backup vmail

But, as @esackbauer wrote, the mails are encrypted. See https://docs.mailcow.email/manual-guides/Dovecot/u_e-dovecot-mail-crypt/

esackbauer

The maildir structure is in vmail volume.
However its encrypted. The encryption key is in crypt volume.

kantamaru267

DocFraggle

how to descrypt all that properly? Simply rinning this script?

# Decrypt /var/vmail
find /var/vmail/ -type f -regextype egrep -regex '.*S=.*W=.*' | while read -r file; do
if [[ $(head -c7 "$file") == "CRYPTED" ]]; then
doveadm fs get compress lz4:1:crypt:private_key_path=/mail_crypt/ecprivkey.pem:public_key_path=/mail_crypt/ecpubkey.pem:posix:prefix=/ \
  "$file" > "/tmp/$(basename "$file")"
  if [[ -s "/tmp/$(basename "$file")" ]]; then
    chmod 600 "/tmp/$(basename "$file")"
    chown 5000:5000 "/tmp/$(basename "$file")"
    mv "/tmp/$(basename "$file")" "$file"
  else
    rm "/tmp/$(basename "$file")"
  fi
fi
done

DocFraggle

kantamaru267 crypt:private_key_path=/mail_crypt/ecprivkey.pem:public_key_path=/mail_crypt/ecpubkey.pem

Here? Or what do you mean?

DocFraggle

Yes

kantamaru267

DocFraggle but at what point will the description key be used?

kantamaru267

I see.

kantamaru267

Actually, I don’t

private_key_path=/mail_crypt/

what’s this path? how can it exist?

2) in the script that’s supposed to descrypt emails:
find /var/vmail/ ....

where it comes from? it doesn’t exist either

# ls /var/vmail
ls: cannot access '/var/vmail': No such file or directory

or should I first a) backup emails b) extract them on my local machie and then c) replace the find /var/vmail/ with the path I’ll have extracted them in?

—

On my server, the root directory of an instance of mailcow is at /opt/mailcow-dockerized/

DocFraggle

kantamaru267 inside the dovecot container!