Panic: Module context expire_mail_user_module missing (Debian 10)

[Alexander Dalloz]

Am 2019-08-02 10:31, schrieb Thomas Krause via dovecot:
> Hi all,
> I tried to migrate a mailserver from Debian 9 (Dovecot 2.2.27) to
> Debian 10 (Dovecot 2.3.4.1). I moved the mail-partition and
> /etc/dovecot from the old to the new server. Dovecot started with
> 2 warnings. When trying to fetch mails via pop3 the server crashes:
> 
> 
> Aug  1 16:56:47 mail19 dovecot: pop3-login: Login: user=<testuser>,
> rip=::1, mpid=22394, session=<rutwcw+PRp4AAAAAAAAAAAAAAAAAAAAB>
> Aug  1 16:56:47 mail19 dovecot:
> pop3(testuser)<22394><rutwcw+PRp4AAAAAAAAAAAAAAAAAAAAB>: Panic: Module
> context expire_mail_user_module missing

Disable the expire plugin in your configuration.

[ ... ]

> Best regards,
> Thomas.

Alexander