Hello all.

I`am a IT manager in a company and we have some problem with mail spam form a company mail account. Is it possible to fix this problem?

Hello Steffen,

I hope we can help you, can you describe your problem?

Okay.

Most of this problems is that the spammers use your email alias to send spam, but they do that on their own devices. You cannot stop that because they use your mailaddress as sender address. Most of time it stops after a few days...

Otherwise you can go into your Exchange environment to see in the logs if the user is spamming trough exchange.

You can scan the users computer with tools as malwarebytes.org etc.

Hi ,

Please check your emails servers are not on open relay .If it is open relay please try to fix it.

use mxtoolbox to find that.

Are you you having that problematic mailbox in on-premise environment else it is on offic

Hi.

Thanks for reply.

I have Office 365.

If I change the password to the mail account, can that fix the issue?

It looks like someone is using your alias.

If you reset all the passwords and there is no open relay you got nothing to worry about.

Otherwise you can go into your Exchange environment to see in the logs if the user is spamming trough exchange

Can you please tell me how I can do that?

Hi ,

Is your environment is an hybrid environment ? If so where you have pointed your mx records for your domain ?

You can find more info about message tracking in this article.

Or use EAC

• Edited by ahuibers Wednesday, January 07, 2015 10:17 AM

Hi Steffen,

Seems that your account has been spoofed. Please try to configure SPF record.

More information, please refer following resource:

https://technet.microsoft.com/en-us/library/dn789058(v=exchg.150).aspx

http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard/

Thanks