The mailing list for listmasters using Sympa

[<address@concealed>]

Hi group,

I have the following problem: 

When i send a e-mail to a list, in my sendmail log appears the following 
error:


Jan 23 11:48:01 sympateste sm-mta[5443]: m0NGm0VE005443:
<testelista@mydomainname>... User unknown  

The problem is the message: "user unknown" 

I think there's a problem in the sendmail settings about sympa .

please help me.

regards
rodrigo