# Bug OP-10395 - "hostname ... does not match the server certificate" after Update to 12.1.1

Project: OpenProject
Status: closed
URL: https://community.openproject.org/work_packages/OP-10395

## Open points

_No work packages_

## Details

| Attribute | Value |
| --- | --- |
| Date |  |
| Priority | Medium |
| Module |  |
| Target versions | 12.1.5 |
| Observed in versions |  |
| Sprint | 12.1.5 |
| Backlog bucket |  |
| Bug found in version (deprecated) |  |
| Found in mobile app version |  |
| Follow-up feedback e-mail |  |
| Requires doc change | No |
| Accessibility | No |
| Pull preview |  |
| List |  |
| Labels |  |

## People

| Attribute | Value |
| --- | --- |
| Assignee |  |
| Accountable |  |
| Product manager |  |
| Developers |  |
| Designer |  |
| Ordered by |  |
| Signed off by |  |
| Interest by |  |

## Planning

| Attribute | Value |
| --- | --- |
| Relevance |  |

## Costs

| Attribute | Value |
| --- | --- |
| Votes |  |
| Work |  |
| Labor costs |  |

## Description

### **Environment**:

Your OpenProject Version: **OpenProject 12.1.1; community edition**

UBuntu 20.04 LTS 64 Bit / Firefox 100.0 (64-Bit) / OpenProject language: Deutsch (German)

### **Logs**

"Beim Senden einer E-Mail ist ein Fehler aufgetreten (hostname "smtp.gruene-neukoelln.de" does not match the server certificate)."

### **Steps to reproduce:**

1.  OP: Administration -> -> _Emails and notifications_
2.  Click on button "Send a testmail"

### **Actual Behavior**

After Update to OpenProject 12.1.1 OpenProject does not send E-Mail anymore.

Settings for Mail have not changed and are correct. I ckeckted installer.dat and also smtp in file conf.d

I restored to previos version of OP via server restoring and mailing works.

### **Expected Behavior**

Open Procet sends mails and notivications after Update to 12.1.1.