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[address@concealed]

What could be causing this error ??

sympa[7133]: Ignoring message which would cause a loop, sent by 
address@concealed
sympa[7133]: Moving bad file address@concealed to bad/

my alias setup looks like this:

#------------------------------ tidbits: list alias created 29 Nov 2003
tidbits: "| /etc/smrsh/queue address@concealed"
tidbits-request: "| /etc/smrsh/queue address@concealed"
tidbits-editor: "| /etc/smrsh/queue address@concealed"
tidbits-subscribe: "| /etc/smrsh/queue address@concealed"
tidbits-unsubscribe: "| /etc/smrsh/queue address@concealed"
tidbits-owner: "| /etc/smrsh/bouncequeue address@concealed"

I am building a new server and am moving from a much older version of Sympa 
to version 3.4.4.3. My old version has worked great for 3 years but it is 
time to upgrade.