is not permitted to relay through this server without authentication.

albatroz

Well-Known Member
Mar 6, 2003
401
6
168
Virtual Orbis / Peru
cPanel Access Level
Root Administrator
Twitter
All the accounts of a customer is getting this error message despite that they all have configured SMTP authentication in their Outlook 2007 clients. Is this an Outlook issue?

Please turn on SMTP Authentication in your mail client. (VENTAS05) [161.132.101.75]:3730 is not permitted to relay through this server without authentication.
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,909
2,227
463
Hello,

Is this happening with a single domain name? If so, could you verify if it exists in /etc/localdomains and not /etc/remotedomains? Also, do you notice any output to /var/log/exim_mainlog when sending an email fails?

Thank you.