smtp email problem

davmac1

I have a program that sends email using codeunit 400. It works fine when there is no Outlook installed.
It never works with Outlook 2010. Strangely enough, it was working with Outlook 2007, but now stopped working with the same error.
With an anonymous authentication or NTLM it gets this error:
The SMTP mail systtem returned the following error (0x8004020E); The server rejected the sender address. The reserver response was 530.5.7.1 Client was not authenticated.
When I tried basic authentication with a user id and password, it got a slightly different error message.

PeterVersteege

I am not an expert in Outlook / Exchange Server, but I think the difference between Outlook 2010 and Outlook 2007 is in the underlying Exchange Server. I have had a similar situation and error message, and apparently you have to define on the server what IP-addresses / IP-ranges are allowed to sent messages directly via the SMTP mail system.

davmac1

Thanks - I will give this a try.