If you send emails via the RBG or TUM mail server address and use sender addresses from other providers, the emails will be blocked and not sent.
Many mail providers (e.g. T-Online, GMail, …) no longer accept it and classify such e-mails as spam if emails are sent from servers different from the one that the sender address specifies. It is important that the mail server matches the mail address for each identity.If you would like to continue sending emails via our mail.in.tum.de or mail.ma.tum.de outgoing mail server, you should change the sender address to your in.tum.de or ma.tum.de address. The settings for this are described at https://wiki.in.tum.de/Informatik/Helpdesk/IntumMatumEmail#Setting_Up_E_45Mail_Clients.
If you want to continue using a different sender, you must change the outgoing mail server. This is described below for the case that you want to use a tum.de address as the sender. If you want to use an external provider such as Gmail as the sender, you must find out the outgoing mail server from the external provider's documentation, after which you can set it up as described in this guide.
With the help of the following screenshots we will show you how to add the outgoing mail server to the TUM identity.
Before you can change the outgoing mail server, you must first add it in Thunderbird.First click on Thunderbird → Preferences in the top menu. Then click on Account Settings. In the opened window click Outgoing Server (SMTP). All outgoing mail servers are listed here. Click on Add and enter postout.lrz.de on Server Name and your LRZ ID as User Name. Then click on OK.
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