Hi Redex, I've heard bad things about Enternet. Try RASPPPoE and see if that helps. Of couse, the MTU think always is problematic. HTH, Tom Thomas W Shinder www.isaserver.org/shinder <http://www.isaserver.org/shinder> ISA Server and Beyond: http://tinyurl.com/1jq1 <http://tinyurl.com/1jq1> Configuring ISA Server: http://tinyurl.com/1llp <http://tinyurl.com/1llp> -----Original Message----- From: redex [mailto:soporte@xxxxxxxxxxxx] Sent: Thursday, February 06, 2003 2:24 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: Mail problems with ISA http://www.ISAserver.org Thanks for the reply John. It is a Mexican DSL Provider, it uses ENTERNET Software by Efficient Networks, The modem is a SPEEDSTREAM 5360. ----- Original Message ----- From: John Tolmachoff <mailto:isalist@xxxxxxxxxxxx> To: [ISAserver.org Discussion List] <mailto:isalist@xxxxxxxxxxxxx> Sent: Wednesday, February 05, 2003 10:26 AM Subject: [isalist] RE: Mail problems with ISA http://www.ISAserver.org Are you using PPPoE? Is this by chance a Ameritech or SBC DSL line? John Tolmachoff MCSE, CSSA IT Manager, Network Engineer RelianceSoft, Inc. Fullerton, CA 92835 www.reliancesoft.com