v2.2.30.2 released

https://dovecot.org/releases/2.2/dovecot-2.2.30.2.tar.gz https://dovecot.org/releases/2.2/dovecot-2.2.30.2.tar.gz.sig

Hopefully the last 2.2.30.x..

    - auth: Multiple failed authentications within short time caused
      crashes
    - push-notification: OX driver crashed at deinit