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A comment on “I have toyota corola”. Parent comment

Re:“I have toyota corola” by 0x0 on Monday November 14, 2016 @09:46AM (#12950057)
I believe SMTP attempts delivery to the A record if there is no MX record.
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Re:“I have toyota corola” by Xylakant on Monday November 14, 2016 @10:11AM (#12950220)
Indeed, 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.
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Re:“I have toyota corola” by jakobdabo on Monday November 14, 2016 @01:01PM (#12951788)
The right thing to do in this situation is to use RFC 7505[1] (Null MX Records).

[1] https://2rfc.net/7505

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Re:“I have toyota corola” by Xylakant on Monday November 14, 2016 @03:50PM (#12953220)
Cool, didn't know that. Thanks for teaching me something today.
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