hi all,

hope someone can help me out....i encounter this prob....i can't received any e-mail from outsider...i had checked all the services n it running like IIS,DNS,RPC, and all the exchange serices as well....

but in the event log i have this error log

MSEchangeAL

LDAP Bind was unsuccessful on directory SERVER for distinguished name ''. Directory returned error:[0x51] Server Down. DC=Mahkam,DC=local

pls advise....ty

Theres a couple of articles on Technet about this error:

For SBS theres one that suggests nothing is wrong providing the error occures ar startup and shutdown (the AD would be closing before or started after Exchange)

http://support.microsoft.com/default.aspx?...kb;en-us;828051

Then theres two that refer to misconfiguration or after a DC was demoted:

http://support.microsoft.com/default.aspx?...kb;en-us;272552

http://support.microsoft.com/default.aspx?...kb;en-us;223346

Hope you can fix this with these articles,