==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.5.1
- Linux/BSD distribution name and version: Ubuntu 14.04.4 Server
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Web server (Apache or Nginx): NGINX
- Manage mail accounts with iRedAdmin-Pro? No
- Related log if you're reporting an issue:
====

Hi

I am trying to install iRedmail on a fresh Ubuntu 14.04.4 Server installation.

After the review of the settings I get this:
The keyserver request times out.

What can I do to fix that?

< Question > Continue? [y|N]y
[ INFO ] Add official apt repo for SOGo in /etc/apt/sources.list
[ INFO ] Add SOGo GPG public key into apt keyring.
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.eJvhU93kAS --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keys.gnupg.net --recv-key 0x810273C4
gpg: requesting key 810273C4 from hkp server keys.gnupg.net
gpg: keyserver timed out
gpg: keyserver receive failed: keyserver error

(...)