Replication server unable to connect to Database

Hi,

I have installed 15.7.1 sp 303 Replication server on windows 2008 and installed Ms Sql2008 and tried to add the database of SQL sever to replication server but Iam getting an error that the Replication server is unable connect to SQL using "sa" but when I login to SQL MGMT studio using the sa and password it works fine.

I tried the similar add database to replication server with ASE database but still I keep getting the same issue and I am able to loginto the database using the administrator even on ASE database.

Please advise if any one have faced the similar issue on replication server to connect to DB or any other steps to be done before addition of database to replication server

thanks,

p.suresh