It could be the default gateway ip- address on your firewall server. If you have wrong default gateway ip-address it is possible to mail inside your ISP's network but not external that network. Best regards Magnus Hellström IS-Manager Neoventa Medical AB -----Original Message----- From: sboticario [mailto:sboticario@xxxxxxxxxxxxx] Sent: den 24 april 2003 20:15 To: [ExchangeList] Subject: [exchangelist] Send emails to other domains http://www.MSExchange.org/ Hi, I have problems to send email to others domains, (yahoo; hotmail; etc..). I only can send email to my domain of my company and of my ISP... I receive the next error:Message delivery to the remote domain 'yahoo.com' failed for the following reason: The connection was dropped by the remote host. I have one server with ISA Server and SMTP Service runs and other server with only exchange that connect to the SMTP Server. But this server don't forward to the correct domain (yahoo, hotmail, etc..) Thank's a lot ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: magnus.hellstrom@xxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')