Edge Smart Host Connector keep connecting

shybrsky

this morning me got error..
most of inbound email stopped in edge server, so we're unable to accept any email from customer .

we r able to send to customer, no problems.

anyone has experienced of this ??
really need help for this

REgards
Shyb

nadnerB

What mail server is it?
It sounds like Exchange to me.

If it is Exchange, have you restarted the "Microsoft Exchange Transport" service?

shybrsky

@nadnerB said:

What mail server is it?
It sounds like Exchange to me.

If it is Exchange, have you restarted the "Microsoft Exchange Transport" service?

yes .. did already ,,
mm... which 1 server need to restart ( i mean service).
we have cas server, mailbox server and edge server

shybrsky

here screenshoot ..

shybrsky

smart host connector r directing to exchange server authentication

nadnerB

(for everyone else, we've been investigating this via chat)

Righto, did the event logs on the edge server show anything?

shybrsky

it said DNS query failed

scottalanmiller

That would do it. Can you do an nslookup on the same query and see what is returned?

shybrsky

i did ... it direct to my AD controller .. right or not ??

scottalanmiller

@shybrsky said:

i did ... it direct to my AD controller .. right or not ??

I don't know what the query was that failed.

shybrsky

me too .. im new of this ..
when i doing mailflow troubleshooting ..a lot of thing as missed ..
this edge serves is vm on hyperV ..
i got plan to restored the vm to date ( when edge server is ok), does it make a sense ??
to make it work again ..

i dunno which one of query has failed .
any suggestion, maybe from another mangolassi member ?/

scottalanmiller

I'm not an Exchange expert, it has been generations since I was actively administering Exchange. What version of Exchange are we dealing with here?

scottalanmiller

Maybe this is the Smart Host that cannot be looked up. Try an nslookup of the Smart Host address.

nadnerB

Restoring your edge server from back up will wipe all the email i the incoming queue.
The issue could just be a DNS one. So restoring your backup won't help.

From the Edge server command prompt, run
nslookup <mailserver>

Here are some articles on DNS troubleshooting that may be of assistance:
https://acbrownit.wordpress.com/2012/12/20/internal-dns-and-exchange-autodiscover/
https://redmondmag.com/Articles/2004/05/01/10-DNS-Errors-That-Will-Kill-Your-Network.aspx

nadnerB

What has changed on your network?

Is your edge server is a DMZ?
Has anyone made network changes? Config/hardware/moved ports etc

nadnerB

Are you getting any errors in your DNS server?

scottalanmiller

@shybrsky said:

i got plan to restored the vm to date ( when edge server is ok), does it make a sense ??
to make it work again ..

Unless you have a reason to believe that something has changed on it, I would not recommend doing this.

shybrsky

@scottalanmiller said:

@shybrsky said:

i got plan to restored the vm to date ( when edge server is ok), does it make a sense ??
to make it work again ..

Unless you have a reason to believe that something has changed on it, I would not recommend doing this.

the reason ... sytem on that date are fine .. email incoming and outgoing fine ... that why

scottalanmiller

@shybrsky said:

the reason ... sytem on that date are fine .. email incoming and outgoing fine ... that why

Yes, we weren't questioning that. We were questioning if losing the mail from in between then and now was worth trying to figure out if the issue was internal or external.

shybrsky

@scottalanmiller itu just different 3 or 4 days with fine condition and bad system ..