cyrus murder environment and http proxy?

[Khalid Mehmood Khan]

Hi!

Does http proxy work in a cyrus murder environment? I keep getting ""PUT /dav/addressbooks/user/testuser/6ecc0a66-74a1412-1581679269354-210887/ef37977290d43113e709f68848aa9a8a5ff8a24f.vcf HTTP/1.1" (if-none-match=*) => "HTTP/1.1 403 Forbidden"" on the frontend while trying to add an entry into addressbook/calendar. The log on backend gives the the follwoing error.
"Cyrus-SASL/2.1.27 OpenSSL/1.1 Nghttp2/1.33.0 Zlib/1.2.11 LibXML/2.9.7 SQLite/3.26.0 LibiCal/3.0 ICU4C/60.3 Jansson/2.11"; "OPTIONS * HTTP/1.1" => "HTTP/1.1 401 Unauthorized" (error=Authentication failed)"
In a discrete murder setup the frontend and backend both use "http_sasl_mech_list: PLAIN" in imapd.conf.

I'm running  the latest stable version of cyrus-imapd 3.0.13.

Thanks.

Regards.

KMK