SMTP Protocol returned a permanent error 501

HCL Domino Domino Forum
1

The out of office agent generates a mail which gets returened because of an error.

The problem is the email address I assume.

Error:

Error transferring to xx.xx.xx.xx; SMTP Protocol Returned a Permanent Error 501 Badly Formatted mail from user/domain%domain@domain.domain.nl

I remember having this problem on a different server a year or so ago and I know I solved it by changing someting in a server doc or global domain doc… but I don’t know what it is that I changed anymore.

Does anybody have any idea?

Thanks