[Bug] Roundcube Out of Office reply fail to send when using SMTP relay

[s4069b]

Describe the bug

roundcube/sieve out of office reply email fails to send when using an SMTP relay (either global or per domain)

tail /var/log/exim4/mainlog reports empty FROM <>

I have FIXED for by:
nano /etc/dovecot/conf.d/90-sieve.conf
and then in plugin section add
sieve_vacation_send_from_recipient = yes
Then reboot.

Out of office reply messages now work again.

Tell us how to replicate the bug

1. enable sieve
2. add smtp relay
3. setup out of office auto reply in roundcube

Which components are affected by this bug?

Mail (Exim, Dovecot), Webmail (Roundcube, Rainloop)

Hestia Control Panel Version

1.7.3

Operating system

Ubuntu 22.04

Log capture

tail /var/log/exim4/mainlog reports empty FROM <>