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notes/projects/tu/glt-mail/20250716-thoughts.md
2025-07-20 22:29:13 +02:00

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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