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Ndlovumm's avatar
Ndlovumm
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Feb 24, 2020

SMTP 530 Error

Has anyone encountered error 530 on smtp? I have configured smtp on my big-ip but when i run a test mail I'm getting the below error message   [<-] 220 host1.mic.co.za Microsoft ESMTP MAIL Servic...
application delivery
BIG-IP
TMSH
Mayur_Sutare's avatar
Mayur_Sutare
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Feb 24, 2020

Normally SMTP 530 error occurs due to below issues,

 

  1. Invalid Authentication (wrong login creds)
  2. Invalid recipient's mail
  3. Blacklisted/Blocked IP Address

 

Also error code 530 implies 530, Must issue a STARTTLS command first. Encryption required for requested authentication mechanism.

 

 

Hope it helps!

 

Mayur

 

 

  • Ndlovumm's avatar
    Ndlovumm
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    Feb 24, 2020

    May you please advise which credentials are you reffering to?