Could anyone help me with the line / configuration for sendmail? I was able to see the messages stuck in the queue (mailq) and found some information about changing the SMART_HOST. I changed the smart host to my supplier who blocks port 25 (mail.optonline.net). The mail attempts to go but gets rejected as DNS error - server not found. I normally do not need authentication on the outgoing server from my accounts in outlook. I believe the problem is with the reverse lookup of Asterisk.local. Does anyone know what lines are needed in what file to tell my cable company the correct information - like 123@123.com rather than xxx@asterisk.local? Thanks everyone.....