robert100
asked on
Exchange Server IMS, event ID 4031
We recently got a whole bunch of event log error ID 4031, source: MSExchangeIMS, SMTP Interface Events, saying that something like the target server reported error 550, unrecognized user, or relay denied, or recipient not exist, any idea?
What is common situation that this error will come up?
We do not allow relay, only to our specified domain. Platform: Exchange 5.5 with sp4 on WIndows 2000 AS, sp2.
Thanks in advance
Robert100
What is common situation that this error will come up?
We do not allow relay, only to our specified domain. Platform: Exchange 5.5 with sp4 on WIndows 2000 AS, sp2.
Thanks in advance
Robert100
DNS Record? - http://support.microsoft.com/default.aspx?scid=kb;en-us;Q245787
Its possible an unauthorized client (i.e., spammer) is attempting (and failing) to send mail from your server.
You can test this yourself by setting up a client outside your network and not part of your domain and then trying to send mail using your mailserver.
Do you get the error consistently? Did you get a batch of them and then they stopped? Could you leave a copy of the exact error? Is the target server your mail server?
You can test this yourself by setting up a client outside your network and not part of your domain and then trying to send mail using your mailserver.
Do you get the error consistently? Did you get a batch of them and then they stopped? Could you leave a copy of the exact error? Is the target server your mail server?
ASKER
Thanks.
I got these errors constantly since last week. One of the error messages is as follows:
The following message could not be delivered to <SizeDoesMatter@msn.com>. The destination server reported: 550 5.2.1 SizeDoesMatter@msn.com... Mailbox disabled, not accepting messages From: <> Subject: Undeliverable: GOT A SMALL OR AVERAGE PENIS? DO YOU WANT A MASSIVE PENIS!
This is another one:
The following message could not be delivered to <ibbuinytromte@hotmail.com
I agree that it maybe someone tried to use our mail server to relay messages. Any other idea?
Robert100
I got these errors constantly since last week. One of the error messages is as follows:
The following message could not be delivered to <SizeDoesMatter@msn.com>. The destination server reported: 550 5.2.1 SizeDoesMatter@msn.com... Mailbox disabled, not accepting messages From: <> Subject: Undeliverable: GOT A SMALL OR AVERAGE PENIS? DO YOU WANT A MASSIVE PENIS!
This is another one:
The following message could not be delivered to <ibbuinytromte@hotmail.com
I agree that it maybe someone tried to use our mail server to relay messages. Any other idea?
Robert100
The original question says that you do not allow relay. What have you done to not allow this?
Have you looked at http://support.microsoft.com/default.aspx?scid=kb;en-us;Q193922 or http://support.microsoft.com/default.aspx?scid=kb;en-us;Q257538
Have you looked at http://support.microsoft.com/default.aspx?scid=kb;en-us;Q193922 or http://support.microsoft.com/default.aspx?scid=kb;en-us;Q257538
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Why did you accept an answer that agreed with me and directed you to use the links I posted to verify it?