[wp-trac] [WordPress Trac] #60420: Default wordpress at site.com sender address can be problematic

[WordPress Trac]

#60420: Default wordpress at site.com sender address can be problematic
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 Reporter:  thinlinecz       |       Owner:  (none)
     Type:  feature request  |      Status:  reopened
 Priority:  normal           |   Milestone:  Awaiting Review
Component:  Mail             |     Version:  1.5.1.2
 Severity:  normal           |  Resolution:
 Keywords:                   |     Focuses:
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Changes (by knutsp):

 * keywords:  close =>


Comment:

 Replying to [comment:7 SirLouen]:
 > Let's try to shape this a little. How would you display this on a Health
 Check? (this information could be candidate for another ticket for a
 Feature Request)
 >
 > Capturing the mail error, saving it in a db record or something to show
 it as a Health Check failure?

 No need to save anything, other than caching it. I mean a Test (those
 automatically performed when visiting Site Health). As we know, that page
 performs tests, then displays the results, what they mean, explains what
 the implications are and so on. In case of failure, the user may be
 advised to create a forwarder to null ("blackhole"), to an existing
 address or create a full account.

 The test may just try to send to the From adress with SMTP (default:
 wordpress@[server.host]), not actually sending any message, using `VRFY`
 or `RCPT TO`. With the latter, the MX will either accept it and invite to
 go on or reject it as non existent. The response code can be turned into a
 boolean (success/unsucessful). Or actually send a test message, but that
 would require a user initiated test, as in the plugin "Site Health Tools".

 I may be able to make a tiny plugin to demonstrate this concept,
 implemented as a Site Health Test, if this is the way to go.

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Ticket URL: <https://core.trac.wordpress.org/ticket/60420#comment:25>
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