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postfix

Helper scripts for Postfix.

holdalias.sh - Hold incomming messages so changes/maintenance on the physical mailboxes are not at risk of losing messages or getting desynced.

holdldapalias.sh - LDAP based version for use with ldap-virtualMail Schema.

/etc/postfix/main.cf:

mua_recipient_restrictions = check_recipient_access
    lmdb:$config_directory/recipient_access
    [...]
    
smtpd_recipient_restrictions = check_recipient_access
    lmdb:$config_directory/recipient_access
    [...]

/etc/postfix/recipient_access:

postmaster@example.com          HOLD Planned maintenance: account=postmaster@example.com

unholdalias.sh - Stop queueing incomming messages.