Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

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
more options

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
more options

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.