help with multiple soas in secondary server ...

[Oswaldo E. Aguirre M.]

hi again ... I have another problem .. in the master server, every seems
to be fine, I see no errors in the log from named ... we have a sun 
with solaris 7 with multiple logical interfaces (I'm pretty sure that
this must be causing the problem) as the master dns server .. we 
have another sun with solaris 7, again with a few logical interfaces
as the secondary server for all the domains in the master server .
the thing is, if I query the secondary server it says: 

rcode = 0 (Success), ancount=6
The following answer is not authoritative:

in the log in the secondary server it appears:
Zone "dcnacional.reacciun.ve" (file Secondaries/dcnacional.reacciun.ve): multiple SOA RRs found


and there, in the secondary file, there are two SOA lines .., but I only
have one in the master file .. 

what can be wrong? where can I find the information?

-Oswaldo