Please turn on SMTP Authentication error

[syedimtiaz]

Hi,
I have migratted multiple account one server to another server successfully,
But SMTP problem occuring from outlook and thunderbird.

" An error occurred while sending mail. The mail server responded: 
Please turn on SMTP Authentication in your mail client.  ([192.168.0.109])
[106.51.xxx.xxx]:58114 is not permitted to relay through this server
without authentication..
 Please check the message recipient "[email protected]" and try again. "

It happing with different domain same issue.

Can you please anyone suggest me to get out from this is issue.

Thanks you

 

[dalem]

your clients do not have
SMTP Authentication on

Have them enable on their email client
or in tweak settings mail check the box

Allow users to relay mail if they use an IP address through which someone has validated an IMAP or POP3 login within the last hour (Pop-before-SMTP)

 

[cPanelLauren]

@dalem is correct they aren't authenticating properly - what happens if you select "use the same settings as incoming server" under "my outgoing server (SMTP) requires authentication"

 

[Joo Inter]

Hello,

i am facing the same problem, when sending email through webmail.

Can please anyone suggest me to get out from this is issue?

Thank you, in advance

 

[cPanelLauren]

Hello,

i am facing the same problem, when sending email through webmail.

Can please anyone suggest me to get out from this is issue?

Thank you, in advance

Do you get this for all accounts when sending through webmail? You might want to read the following: Tutorial - Troubleshooting "550 Please turn on SMTP Authentication in your mail client"