SMTP troubleshooting

[gudguy]

1. Messaging Awaiting Directory Lookup:

Any script I can run just double-clicking on it to find out if LDAP authentication is taking place or if Mailbox is exists?

2. SMTP routing connection between two servers:

Also any script/utility to know the connection status between two smtp servers

3. SMTP protocol:

I know we can send a test message using telnet and port 25. Through telnet we need to type many commands to send a test email. However is there any simpler way or quick way through scripting?

Thank you in advance.

 

[luisrato]

Do you have routers or firewall between the two servers??? If not, it may not be communication problems.

It may be a bad configuration in your Rounting Group, check if you have the correct bridge head server configured.

It may be a bad DNS configuration in the NIC of your Exchange Server (The Exchange Routing Groups depends a lot of the netbios name resolution). Try to ping the netbios name of the destination server and check if the name resolution is ok.

It may be a problem with the commutication between your exchange server and your Global Catalog. Test the communication between your Exchange and your global catalog server using LDP tool from Windows Support Tools. To do that check the Microsoft, check the Microsoft article number 271201.


To use the telnet between the two servers to test a message, do this:

at command line:
1 - telnet
2 - set localecho (in windows 2003) or set local_echo (in windows 2000)
3 - open [ip of the destination smtp server] 25
4 - helo domain.com (the domain you want to test)
5 - mail from:alias@domain.com (insert a valid email address)
6 - rcpt to:alias@domain.com (insert one email address that you have access and check if the mail arrives to this address)
7 - data
8 - (type any text)
9 - . (yes it's a dot, it will terminate the message and send it)

I hope that this can help you.

Luís Rato
MCP;MCSA;MCSA Messaging;MCSE;CIWA;CIWP;CIWSA;MCIWA