Messages being rejected with a "501: Invalid Domain" Symptoms Some messages are getting rejected from Symantec Mail Securty for Domino with Premium AntiSpam enabled, without leaving behind any log.
Section 4.1.2 of RFC 2821 (ftp://ftp.rfc-editor.org/in-notes/rfc2821.txt) states the underscore is not permited in domain labels for SMTP clients or servers.
Change the host name to no longer include an underscore.
References RFC 2821 is available at ftp://ftp.rfc-editor.org/in-notes/rfc2821.txt.
Login to Subscribe
Please login to set up your
For security reasons, your link to this document has expired. Please click on the attachment link to access this file.
The attachment that you are looking for no longer exists.
There has been an issue retrieving your attachment. Please try again.
Currently server is down.
Get support for your product, with downloads, knowledge base articles, documentation, and more.
Maximize your product competency and validate technical knowledge to gain the most benefit from your IT investments.
Submit a suspected infected file to Symantec.
Report a suspected erroneous detection (false positive).
Set default language
Do you wish to save this as your future site?