This looks like SSL error. Are you connecting to LMTP with non-TLS connection?
Aki
> On 04/03/2025 13:11 EET Andrea Gabellini via dovecot <dovecot@dovecot.org>
> wrote:
>
>
> Hi,
>
> Thanks for the suggestion! I installed dovecot-dev, and now the library
> is present, and the previous error has disappeared.
> I then added the following configuration for mail-crypt to an otherwise
> fully functional setup:
>
> mail_plugins {
> mail_crypt = yes
> }
>
> crypt_user_key_curve = prime256v1
>
> crypt_global_public_key_file = /etc/dovecot/ecpubkey.pem
> crypt_global_private_key main {
> crypt_private_key_file = /etc/dovecot/ecprivkey.pem
> }
>
> The keys were generated with the following commands:
>
> openssl ecparam -name prime256v1 -genkey | openssl pkey -out ecprivkey.pem
> openssl pkey -in ecprivkey.pem -pubout -out ecpubkey.pem
>
> Messages received via LMTP are correctly stored and read by IMAP, but I
> keep seeing this error in the logs:
>
> lmtp(3809525): Disconnect from x.x.x.x: Connection closed: SSL_read
> failed: error:03000093:digital envelope routines::command not supported,
> error:03000093:digital envelope routines::command not supported
> (state=READY)
>
> Any idea what might be causing this issue?
>
> Thanks in advance for your help!
>
> Best regards,
> Andrea
>
> Il 04/03/25 10:46, Aki Tuomi ha scritto:
> >> On 04/03/2025 11:32 EET Aki Tuomi <aki.tu...@open-xchange.com> wrote:
> >>
> >>
> >>> On 04/03/2025 11:16 EET Andrea Gabellini via dovecot
> >>> <dovecot@dovecot.org> wrote:
> >>>
> >>>
> >>> Hi everyone,
> >>>
> >>> I'm trying to use the mail-crypt plugin on Debian Bookworm with Dovecot
> >>> 2.4. This is my first time using it, so please forgive any basic
> >>> questions...
> >>>
> >>> I've added the following configuration:
> >>>
> >>> mail_plugins {
> >>> mail_crypt = yes
> >>> }
> >>>
> >>> crypt_global_public_key_file = /etc/dovecot/xxx_pub.pem
> >>> crypt_global_private_key main {
> >>> crypt_private_key_file = /etc/dovecot/xxx_priv.pem
> >>> }
> >>>
> >>> log_debug = category=debug
> >>>
> >>> However, as soon as I try to use it, I see the following log entry:
> >>>
> >>> Fatal: dcrypt_initialize(): Plugin 'dcrypt_openssl' not found from
> >>> directory /usr/lib/x86_64-linux-gnu/dovecot
> >>>
> >>> I've searched my file system and checked the available dovecot-*
> >>> packages, but I couldn't find any trace of the missing library.
> >>>
> >>> Am I missing something, or is this library indeed absent from the
> >>> official packages?
> >>>
> >>> Thanks in advance for your help!
> >>>
> >>> Best regards,
> >>> Andrea
> >>>
> >> Thanks for letting us know, we'll look into this. Looks like there is a
> >> packaging mistake.
> >>
> >> Aki
> > Seems the library has been accidentically placed into dovecot-dev, so
> > installing that (for now) will fix the problem. We'll fix this for 2.4.1.
> >
> > Aki
> >
>
> --
> TIM San Marino S.p.A.
> Andrea Gabellini
> Engineering R&D
> TIM San Marino S.p.A. - https://www.telecomitalia.sm
> Via Ventotto Luglio, 212 - Piano -2
> 47893 - Borgo Maggiore - Republic of San Marino
> Tel: (+378) 0549 886237
> Fax: (+378) 0549 886188
>
>
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