Hi Laura,

On Wed, 26 Jan 2022 at 12:09:04AM +0000, Laura Smith wrote:
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

I thought that

ssl_ca = </etc/ssl/certs/ca-certificates.crt

is worth a try.


Does ssl_ca even apply to dsync/imapc ?

as I wrote: I cannot test your scenario and the link to the documentation I 
sent was only a rough idea.

Looking at the docs its all about client certificate authentication ? Something which does not apply to my environment, and even if it did, it would not apply to dsync/imapc because I am initiating the connection, not the remote end ?

In my understanding this parameter is not only about client certificate 
authentication. If you want, then please have a look at this:

https://doc.dovecot.org/settings/core/#core_setting-ssl_ca

[...]
These CAs are also used by some processes for validating outgoing SSL 
connections, i.e. performing the same function as ssl_client_ca_file.
[...]

And that's why I wrote: it's worth a try (it takes only two minutes to test it ...). IMHO of course. If you don't want to test it, OK. But I have no further ideas, sorry.

Regards,
Markus

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