Error 550 - verification error

ITB

• January 31, 2019 05:40

Hi, We have 2 servers. The 1st one, has some smaller accounts and among them a domain we use for most of our email, let's call it example.com. We migrated the accounts of our 2nd server to another one (setup the hostname as s3.example.com) and are getting these errors trying to send emails, either from the cli and from php. For example, after the command: sendmail it@example.com < mail.txt I'm got the following error message: SMTP error from remote mail server after RCPT TO:: 550-Verification failed for 550-The mail server could not deliver mail to root@s3. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries. 550 Sender verify failed We the email is sent from a php script the verification fails for @s3 I've searched/googled a lot, and have not found a solution. Thank you

• 

  ITB

  • January 31, 2019 11:37

  The search kept going, and after a lot of trial and error (or getting nowhere), it looks like it's fixed. Not sure what was the thing that solve it in the end, but the last thing I did was change the hostname. The funny thing is I had it at s3.example.com, change it to s1.example.com and back again to s3.example.com. And immediately received the email informing me of the change to s3. Tried to send email from cli and from a php script and both worked. On a side note, I had mannually created the dns zone for s3.example.com. Prior to the hostname change and back again it allowed me to select the Email Routing. Now, no longer shows that option (and it shouldn't when comparing with the other servers).

  0
• 

  cPanelLauren

  • February 04, 2019 18:41

  Hi @ITB That's odd, though I'm happy to see you were able to resolve it. My best guess is that when the hostname was originally set some configuration hadn't been automatically processed properly.

  0

Please sign in to leave a comment.