postfix service: fix recipientDelimiter not to be dependent on sslCert

Changed files
+2 -1
nixos
modules
services
+2 -1
nixos/modules/services/mail/postfix.nix
···
smtpd_tls_key_file = ${cfg.sslKey}
smtpd_use_tls = yes
-
+
''
+
+ optionalString (cfg.recipientDelimiter != "") ''
recipient_delimiter = ${cfg.recipientDelimiter}
''
+ optionalString (cfg.virtual != "") ''