fix(core): Add an option to disable STARTTLS for SMTP connections (#9415)

packages/cli/src/UserManagement/email/NodeMailer.ts

@@ -19,6 +19,7 @@ export class NodeMailer {
 			host: config.getEnv('userManagement.emails.smtp.host'),
 			port: config.getEnv('userManagement.emails.smtp.port'),
 			secure: config.getEnv('userManagement.emails.smtp.secure'),
+			ignoreTLS: !config.getEnv('userManagement.emails.smtp.startTLS'),
 		};
 
 		if (

packages/cli/src/config/schema.ts

@@ -816,6 +816,12 @@ export const schema = {
 					default: true,
 					env: 'N8N_SMTP_SSL',
 				},
+				startTLS: {
+					doc: 'Whether or not to use STARTTLS for SMTP when SSL is disabled',
+					format: Boolean,
+					default: true,
+					env: 'N8N_SMTP_STARTTLS',
+				},
 				auth: {
 					user: {
 						doc: 'SMTP login username',