distribution list error

[savez]

hello
I have problems with the distribution list.

I created a list of users web interface and added: OK

if I try to send Mail to a floppy distribution list I get an error:

I'm sorry to have to inform you That your message Could not be delivered to
one or more recipients. It's attached below.

For Further assistance, please send mail to postmaster.

If you do know, please include this problem report. You can delete your own
text from the attached returned message.
The mail system

how can I fix this?

[soba@ukw.edu.pl]

Check the e-mail adress in distribution list.