I have windows SBS 2003 Premium, and it serves the following: DC, DNS, DHCP, Exchange 2003, and ISA 2004.
I need to reinstall IIS, which makes me reinstall Exchange too and remounted the mailbox. We can send mails out and we receive locally (within the domain) but not from external. If you try to send me a mail on exchange, I will be not receive it and you will get the message below:
"This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed:
SMTP error from remote mailer after RCPT TO:<email@example.com>:
host mx00.1and1.co.uk [220.127.116.11]: 550 <firstname.lastname@example.org>:
We can't receive mails for two days now on Exchange.
Please, help me on this