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example.com has an empty MX record, so you can't really send email to it anyway.
by 0xcde4c3db 10y ago
example.com has an empty MX record, so you can't really send email to it anyway.
- teddyh 10y ago“Empty”? It does not have an MX record.
- 0xcde4c3db 10y agoYou're right; I must have misread the dig output. I thought it showed an MX record with no hostname, but that was probably the question section.
- 0x0 10y agoI believe SMTP attempts delivery to the A record if there is no MX record.
- Xylakant 10y agoIndeed, if no MX record is known, but an A record is, mail will be sent to that host. However, example.(com,org) are designated testing domains by RFC and any self-respecting mail server should know not to forward mails there. And on top of that, since the domains are designated testing domains, they do not accept mails.