On Tue, 2023-07-11 at 17:13 +0000, ml+mailop--- via mailop wrote: > > Which MTA is that? >
Microsoft Exchange Server 2003? Seriously though, it's not a "fallback" in any pejorative sense. SMTP predates much of DNS, including MX records. It's a fundamental part of the specification. _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
