Argonaut-user-reminder : add mail server

Problem : Argonaut-user-reminder use https://metacpan.org/pod/Mail::Sendmail who need mail server. ssmtp can't be use (in docker for example)

Solution : I had unshift @{$Mail::Sendmail::mailcfg{'smtp'}} , 'my_mail_server'; in Argonaut-user-reminder

Can be possible to add selection of mail server in fusiondirectory config, for example?

regards,