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Every time I send an email to a particular person, it fails to send. Why?? only happends to this one address.

  • 1 reply
  • 1 has this problem
  • 3 views
  • Last reply by christ1

dperrijr
dperrijr
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Every time I send this person an email, it is returned as "Mail Delivery. Is this person blocked? Is the problem on my side or her side? Here is a shot of the failed delivery:

SMTP error from remote mail server after end of data: 

   550-DKIM: encountered the following problem validating fbcinfo.org:
   550 pubkey_unavailable

Diagnostic-Code: smtp; 550-DKIM: encountered the following problem validating fbcinfo.org: 

550 pubkey_unavailable

Help!

Every time I send this person an email, it is returned as "Mail Delivery. Is this person blocked? Is the problem on my side or her side? Here is a shot of the failed delivery: SMTP error from remote mail server after end of data: 550-DKIM: encountered the following problem validating fbcinfo.org: 550 pubkey_unavailable Diagnostic-Code: smtp; 550-DKIM: encountered the following problem validating fbcinfo.org: 550 pubkey_unavailable Help!

All Replies (1)

christ1
christ1
  • Top 25 Contributor
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It is a problem between your email provider and the recipients email provider. Talk to your email provider. This has got nothing to do with Thunderbird.