Add recipients to block in ESA

[LuigiDiFronzo9542]

Hello,

We have an implementation with ESA C600V where there is only one outgoing mail flow. We'd like to know the best way to block the sending of emails to certain specific recipients. What would be the most appropiate way to achieve it.

Thanks.

Luigi Di Fronzo.

[Ken Stieers]

Probably the "best" way is to create an outgoing mail policy with one content filter that drops all mail.

In the outgoing policy, set the recipients to the mail addresses you don't want mail sent to.

[LuigiDiFronzo9542]

Thanks you for your reply Ken,

I forgot to mention that I have over 11000 email address in a txt file to avoid sending messages to. In such situation, what would be the best solution to import and restrict mailing to these addresses.

Thank you. 

Luigi Di Fronzo.

[Ken Stieers · Accepted solution]

Ok.. so if you have that many, a dictionary and content filter is better... 

1. create a dictionary with all of these names.  Dictionaries can be imported, so its pretty easy.

2. create a content filter that has a condition if the recipient contains a term in a dictionary. and the action set to drop.

3. Add the content filter to your default Outbound policy.

One thing to note: if an email is sent to multiple addresses, and one of the addresses is on the drop list, the whole email will get dropped, no one will get it.

[LuigiDiFronzo9542]

Thank you Ken,

I didn´t see this reply. I´ll try that.

Regards.

[svgeorgi]

The filter which Ken mentioned can use a dictionary, and dictionaries can be imported from external file.

[Ken Stieers]

To be clear, a CONTENT FILTER can use a dictionary.

If you want splintering on the outbound mail, you have to use the POLICY config, which CAN'T use a dictionary.  It can use LDAP groups, but now you're managing that list in your LDAP directory... not the best plan if your goal is to block the mail, not make it easier to send...

[LuigiDiFronzo9542]

Actually, the goal is to have a single outgoing mail queue. From that email queue, we want to block sending emails to a specific list of external email addresses.

In this situation is alright to use a Content Filtering with Dictionary?

Thank you.