diff --git a/tofu/modules/services/backend-infra/main.tf b/tofu/modules/services/backend-infra/main.tf
index 25edf35c5..e32c1d825 100644
--- a/tofu/modules/services/backend-infra/main.tf
+++ b/tofu/modules/services/backend-infra/main.tf
@@ -239,6 +239,24 @@ resource "aws_vpc_security_group_egress_rule" "allow_tls_to_all" {
   cidr_ipv4         = "0.0.0.0/0"
 }
 
+resource "aws_vpc_security_group_egress_rule" "allow_smtp_to_all" {
+  security_group_id = aws_security_group.backend.id
+  description       = "smtp to internet"
+  from_port         = 587
+  to_port           = 587
+  ip_protocol       = "tcp"
+  cidr_ipv4         = "0.0.0.0/0"
+}
+
+resource "aws_vpc_security_group_egress_rule" "allow_smtp_to_all" {
+  security_group_id = aws_security_group.backend.id
+  description       = "smtp to internet"
+  from_port         = 587
+  to_port           = 587
+  ip_protocol       = "tcp"
+  cidr_ipv4         = "0.0.0.0/0"
+}
+
 resource "aws_vpc_security_group_egress_rule" "allow_smtp_to_all" {
   security_group_id = aws_security_group.backend.id
   description       = "smtp to internet"