[wp-meta] [Making WordPress.org] #6920: Detect invalid plugin committer email addresses prior to sending bulk emails

[Making WordPress.org]

#6920: Detect invalid plugin committer email addresses prior to sending bulk
emails
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 Reporter:  dd32              |       Owner:  (none)
     Type:  defect (bug)      |      Status:  new
 Priority:  low               |   Milestone:
Component:  Plugin Directory  |  Resolution:
 Keywords:                    |
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Comment (by dd32):

 Given the above discussion, there's a few options:
 1. Detect invalid/expired domains (plus potentially those with no mail
 server defined - ie no MX records and the A not having port 25 open) prior
 to emailing
 2. !^ plus attempting to send an email via `RCPT TO` and see if it's
 accepted - This is likely too much, and likely to get us future email
 problems if a server feels it's spam or malicious. There's a not
 insignificant risk of false positives
 3. Script it, either have a Meta dev run a bin script or run it on the
 post-email-receive hook, let the email bounce but have the majority
 handled automatically.

 I'm leaning towards #3 - That would mean we wouldn't need to work on this
 until the next bulk email is sent.

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Ticket URL: <https://meta.trac.wordpress.org/ticket/6920#comment:6>
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