<div>
If the mails are coming from blank sender then it's spam mails.<br />
To stop this check the spam filter setting.
</div>


If the mails are coming from blank sender then it's spam mails.
To stop this check the spam filter setting.

<div>
You haven't said which version of Exchange you are using &nbsp;- however ensure that you have recipient filtering enabled. Where exactly you do that depends on the version of Excahnge. <br />
<br />
Simon.
</div>


You haven't said which version of Exchange you are using  - however ensure that you have recipient filtering enabled. Where exactly you do that depends on the version of Excahnge.

Simon.

<div>
I'm using Exchange 2010, what kind of spam filtering setting i should configure? the confidence level? If i set the confidence level,im afraid it will cause some normal email treat it as spam.<br />
<br />
Patrick
</div>


I'm using Exchange 2010, what kind of spam filtering setting i should configure? the confidence level? If i set the confidence level,im afraid it will cause some normal email treat it as spam.

Patrick

<div>
Do you have recipient filtering enabled?<br />
<br />
Simon
</div>


Do you have recipient filtering enabled?

Simon

<div>
Hi,<br />
<br />
Is this features at Edge transport? &nbsp;We didnt install edge transport in our environment. <br />
<br />
Patrick
</div>


Hi,

Is this features at Edge transport?  We didnt install edge transport in our environment.

Patrick

<div>
<div class="content wysiwyg-content">
Hi Experts,<br />
<br />
I checked on my queue viewer, there are always a queue mail there which do not have a sender, return-mail.en-japan.com , deliver type:&quot;DNSconnectoryDeliver<wbr />y&quot; MSG source: DSN<br />
<br />
is this a spam? <br />
<br />
how could i prevent this? <br />
<br />
Thanks
</div>
</div>


Hi Experts,

I checked on my queue viewer, there are always a queue mail there which do not have a sender, return-mail.en-japan.com , deliver type:"DNSconnectoryDelivery" MSG source: DSN

is this a spam? 

how could i prevent this? 

Thanks

Exchange queue problem

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.