Please turn on SMTP Authentication error

syedimtiaz

Registered
Apr 30, 2019
1
0
1
bangalore
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Root Administrator
Hi,
I have migratted multiple account one server to another server successfully,
But SMTP problem occuring from outlook and thunderbird.
Code:
" 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
 

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Last edited by a moderator:

dalem

Well-Known Member
PartnerNOC
Oct 24, 2003
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DataCenter Provider
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

Forums Analyst II
Staff member
Nov 14, 2017
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