modules/mail: replace msmtp with postfix

Using a full MTA might seem like overkill, but it fixes my biggest
annoyance with msmtp -- not only can I now read mail while offline, I
can send it too, and postfix will just keep trying every so often
until it sends (or five days have passed, but at that point the
message is probably irrelevant anyway).

Postfix's defaults are surprisingly good for this use case.  The
longest it will wait between attempts is 4000 seconds, and it'll keep
trying for five days before giving up and bouncing.

1 files changed, 1 insertions, 1 deletions

diff --git a/modules/workstation/mail/default.nix b/modules/workstation/mail/default.nix
index 4564a2dee1c9..e33b7a702823 100644
--- a/modules/workstation/mail/default.nix
+++ b/modules/workstation/mail/default.nix
@@ -7,7 +7,7 @@ let
 in
 
 {
-  imports = [ ./msmtp ./mutt ./notmuch ];
+  imports = [ ./mutt ./notmuch ./postfix ];
 
   environment.systemPackages = with pkgs; [ isync ];