Hi, I have an ISA Server with a mail server (MDaemon). All my internal clients can send an recieve mail. The mail server can get mail placed on another mail server on the internet. But i can't send a mail to the server : I have an email address on the server and i wan't to send a mail to this address but from another address I have. I have an error how said me there was an SMTP error. On the ISA server I have set a publication rule how publish the POP3 and SMTP server services for my mail server. I have in my internal DNS an mail server entry at my internal address. What must I do ? Thanks. Guillaume