I wasn't able to reproduce this error myself on bookworm with 2.4.
Aki
> On 04/03/2025 15:06 EET Andrea Gabellini via dovecot <dovecot@dovecot.org>
> wrote:
>
>
> Hi,
>
> Here is the configuration of the backend where I have mail-crypt enabled:
>
> service lmtp {
> inet_listener lmtp {
> port = 24
> ssl = yes
> }
> }
>
> As expected, it does not accept non-SSL connections.
>
> The proxy that forwards emails has ssl = yes set in the passdb. Running
> the proxy in debug mode does not show any errors. As I mentioned
> earlier, without the mail-crypt plugin, no errors appear, and all
> communications are properly encrypted.
>
> It is quite odd that an error is logged, yet messages are processed
> correctly.
>
> Thanks in advance for your support!
>
> Best regards,
> Andrea
>
>
> Il 04/03/25 12:31, Aki Tuomi via dovecot ha scritto:
> > 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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> >>
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> >>
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> --
> 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
>
>
> --
> Informativa Privacy
>
> Questa email ha per destinatari dei contatti presenti negli archivi di TIM
> San Marino S.p.A.. Tutte le informazioni vengono trattate e tutelate nel
> rispetto della normativa vigente sulla protezione dei dati personali (Reg. EU
> 2016/679). Per richiedere informazioni e/o variazioni e/o la cancellazione
> dei vostri dati presenti nei nostri archivi potete inviare una email a
> priv...@telecomitalia.sm.
>
> Avviso di Riservatezza
>
> Il contenuto di questa e-mail e degli eventuali allegati e' strettamente
> confidenziale e destinato alla/e persona/e a cui e' indirizzato. Se avete
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