• Introducing WebPros Cloud - a fully managed infrastructure platform purpose-built to simplify the deployment of WebPros products !  WebPros Cloud enables you to easily deliver WebPros solutions — without the complexity of managing the infrastructure.
    Join the pilot program today!
  • Support for BIND DNS has been removed from Plesk for Windows due to security and maintenance risks.
    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS.

SMTP Authentication

L

LiquidSolid

Guest
Dear,

I have a question regarding the SMTP authentication methods within Plesk (7.5.4) on a fresh installation of CentOS 4.2.

A customer receives the following error message when sending e-mails, me on the other can send e-mails from this server and everything is working fine.

Folgende Empfänger konnten nicht erreicht werden:
'[email protected]' am 29.01.2006 20:50
553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)

Now I find this somehow odd since I have enabled authentication is required and smtp checked.
In Outlook (2003) is 'my server requires authentication' enabled and all three options have been tried. No change in error MSG.

When I check POP3 with a lock time of 3mins this customer can send e-mails and everything is working fine.

Does someone have an idea why he can't send e-mail when POP3 isn't checked? (Does POP3 mean pop3 before SMTP?)

Thanks a lot!
 
Back
Top