Re: variable expansion allowed in 'listen' config not working

Hi,

On Sat, Sep 20, 2025, at 9:13 AM, Aki Tuomi via dovecot wrote:

Can you try

listen = $ENV:LAN_IPv4 , 127.0.0.1

note the space before comma

Aki

With

cat dovecot.conf

importEironment { E_LAN_IPv4 = %{env:LAN_IPv4} E_LAN_IPv6 = %{env:LAN_IPv6} }

cat dovecot.env

LAN_IPv4=10.1.1.1 LAN_IPv6=fd80:10:1::1

cat /etc/systemd/system/dovecot-current.service

EnvironmentFile=/etc/dovecot/dovecot.env

This works

listen = 10.1.1.1, 127.0.0.1, [fd80:10:1::1], [::1]

This fails

listen = $ENV:E_LAN_IPv4 , 127.0.0.1, [$ENV:E_LAN_IPv6] , [::1]

This works

listen = $ENV:E_LAN_IPv4 , 127.0.0.1, $ENV:E_LAN_IPv6 , [::1]

This fails

listen = %{env:E_LAN_IPv4} , 127.0.0.1, [%{env:E_LAN_IPv6}] , [::1]

'works' so far just means that dovecot starts up without complaining.

I didn't yet TEST the listeners.

Dave