Change to more powerful mail library that especially adds a correct Date heeader for us.

repositories/request.go

@@ -7,7 +7,6 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
-	"html/template"
 	"log"
 	"math/big"
 	"github.com/wneessen/go-mail"
@@ -136,8 +135,7 @@ func (r *RequestRepo) sendConfirmationMail(request models.Request) error {
 	var data = struct {
 		Config    config.Config
 		Request   models.Request
-		MessageId template.HTML
-	}{r.config, request, template.HTML("<" + randomString(15) + "@" + r.config.Server.Domain + ">")}
+	}{r.config, request	}
 	err := templating.WriteTemplate(&messageText, "confirmationMail", data)
 	if err != nil {
 		err = fmt.Errorf("error parsing confirmation Mail: %w", err)
@@ -165,8 +163,14 @@ func (r *RequestRepo) sendConfirmationMail(request models.Request) error {
 				message.Subject("Sprechstunde löschen")
 		}
 		message.SetBodyString(mail.TypeTextPlain, messageText.String())
-		client, err := mail.NewClient(r.config.Mailer.SmtpHost, mail.WithPort(r.config.Mailer.SmtpPort))/*, mail.WithSMTPAuth(mail.SMTPAuthPlain),
-			mail.WithUsername(r.config.Mailer.SmtpIdentity), mail.WithPassword(r.config.Mailer.SmtpPassword))*/
+
+		var options []mail.Option
+		if r.config.Mailer.SmtpUseAuth {
+			options = append(options, mail.WithSMTPAuth(mail.SMTPAuthPlain))
+			options = append(options, mail.WithUsername(r.config.Mailer.SmtpIdentity))
+			options = append(options, mail.WithPassword(r.config.Mailer.SmtpPassword))
+		}
+		client, err := mail.NewClient(r.config.Mailer.SmtpHost, mail.WithPort(r.config.Mailer.SmtpPort))
 		if err != nil {
 			log.Println(err.Error())
 			return err;
@@ -175,15 +179,6 @@ func (r *RequestRepo) sendConfirmationMail(request models.Request) error {
 			log.Println(err.Error())
 			return err;
 		}
-/*		var auth smtp.Auth
-		if r.config.Mailer.SmtpUseAuth {
-			auth = smtp.PlainAuth(r.config.Mailer.SmtpIdentity, r.config.Mailer.FromAddress, r.config.Mailer.SmtpPassword, r.config.Mailer.SmtpHost)
-		}
-		err = smtp.SendMail(fmt.Sprintf("%s:%d", r.config.Mailer.SmtpHost, r.config.Mailer.SmtpPort), auth, string(r.config.Mailer.FromName), to, message.Bytes())
-		if err != nil {
-			err = fmt.Errorf("error sending mail by smtp: %w", err)
-			log.Println(err.Error())
-		}*/
 	}
 	return nil
 }