20250720 regular commit

projects/tu/glt-mail/20250710-init.md

@@ -4,7 +4,7 @@
 
 ## Vorstellung
 
-- GLT Meldungen dper Mail an Sammelpostfach
+- GLT Meldungen per Mail an Sammelpostfach
 - Empfaenger adresse benoetigt
 
 - zum Beispiel Registrierung Veeam

projects/tu/glt-mail/20250716-thoughts.md

@@ -0,0 +1,23 @@
+## Abbreviations
+
+- ga: Gebaeudeautomatisierung
+- glt: Gebaeudeleittechnik
+
+
+## Notes
+
+- Sophos SG Cluster
+- Many VLANs -> Open port 25, 465, 587 for all networks to the mail server
+- Which domain? @ga.tum.de probably. just mx record needed in local network
+- DNS Server. Hopefully, the Sophos can do it
+- For outgoing mails use the mail-gw which relays the mails to the LRZ mailservers which relays it further
+- LRZ only accepts mails from a @<...>.tum.de domain, which should be given
+- I could use mailcow, without all spam, netfilter and ipv6 stuff (though I love ipv6 and would activate it everywhere)
+- Single mailbox needed. (mailcow provideds more) 
+- imap will be needed for accessing the mails
+- though this mail server will be more a imap server than a smtp server
+- imap for receiving all the alerts; smtp for relaying of some mails which should go outside the local network
+- Do I really need SSL/TLS certs?
+
+
+- DOMAIN: ga.tum.de