1 files changed, 1 insertions, 0 deletions

diff --git a/ymir.nix b/ymir.nix
index bb0fc74a..1f3a45db 100644
--- a/ymir.nix
+++ b/ymir.nix
@@ -95,6 +95,7 @@ in rec {
       enable = true;
       allowPing = true;
       allowedTCPPorts = [ 22 # ssh
+                          25 # smtp
                           5222 # xmpp.s2c
                           5269 # xmpp.s2s
                           655 # tinc.yggdrasil