#smtp — Public Fediverse posts

Deploy a Self-Hosted #SMTP Relay with #Mailcow on #Ubuntu #VPS (10 Minute Quick-Start Guide) This article provides a guide to deploy a self-hosted SMTP relay with Mailcow on Ubuntu VPS.

When you deploy a self-hosted SMTP relay with Mailcow on Ubuntu VPS, you can manage email delivery securely and efficiently. This guide walks you through installing and configuring Mailcow for SMTP relaying. ...
Continued 👉 https://blog.radwebhosting.com/deploy-a-self-hosted-smtp-relay-with-mailcow-on-ubuntu-vps/?utm_source=mastodon&utm_medium=social&utm_campaign=mastodon.social #opensource #mailserver #selfhosting #mailrelay #selfhosted

#TechIsShitDispatch
I send an abuse complaint to [email protected].
1und1.net reroutes the complaint to [email protected], _and rewrites the To: header of my email to contain that address_, which it REALLY SHOULD NOT DO.
versatel.de rejects the email because DMARC verification failed. Of course it did: they rewrote the email header and broke the DKIM signature.
For some reason, it took 11 days for them to reject the email.
Why are idiots allowed to run networks?
#SMTP #DMARC #DKIM #SysAdmin