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

repositories/request.go

@@ -7,9 +7,9 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"github.com/wneessen/go-mail"
 	"log"
 	"math/big"
-	"github.com/wneessen/go-mail"
 	"officeHours/config"
 	"officeHours/models"
 	"officeHours/templating"
@@ -133,9 +133,9 @@ func (r *RequestRepo) newSecret() (string, error) {
 func (r *RequestRepo) sendConfirmationMail(request models.Request) error {
 	var messageText bytes.Buffer
 	var data = struct {
-		Config    config.Config
-		Request   models.Request
-	}{r.config, request	}
+		Config  config.Config
+		Request models.Request
+	}{r.config, request}
 	err := templating.WriteTemplate(&messageText, "confirmationMail", data)
 	if err != nil {
 		err = fmt.Errorf("error parsing confirmation Mail: %w", err)
@@ -154,13 +154,13 @@ func (r *RequestRepo) sendConfirmationMail(request models.Request) error {
 		}
 		if err := message.To(request.OfficeHour.Tutor.Email); err != nil {
 			log.Println(err.Error())
-			return err;
+			return err
 		}
 		switch request.Action {
-			case models.RequestActivate:
-				message.Subject("Sprechstunde anlegen")
-			case models.RequestDelete:
-				message.Subject("Sprechstunde löschen")
+		case models.RequestActivate:
+			message.Subject("Sprechstunde anlegen")
+		case models.RequestDelete:
+			message.Subject("Sprechstunde löschen")
 		}
 		message.SetBodyString(mail.TypeTextPlain, messageText.String())
 
@@ -173,11 +173,11 @@ func (r *RequestRepo) sendConfirmationMail(request models.Request) error {
 		client, err := mail.NewClient(r.config.Mailer.SmtpHost, mail.WithPort(r.config.Mailer.SmtpPort))
 		if err != nil {
 			log.Println(err.Error())
-			return err;
+			return err
 		}
 		if err := client.DialAndSend(message); err != nil {
 			log.Println(err.Error())
-			return err;
+			return err
 		}
 	}
 	return nil