Block Emails from certain Top Level Domains

Block Emails from certain Top Level Domains

Postby malcolmhum » Tue Feb 21, 2012 10:46 am

I want to block emails that have not come from any of the following domains. au;ie;us;info;me.uk;co.uk;org;org.uk;gov;net;sch.uk;ac.uk;ltd.uk;uk.net;gb;eu;ca;de;gg;gi;hk;im;it;je;jp;ke;kr;mt;nl;nz;se;

I have tried in the content filter setting a block for SMTP Sender does not contain, but this is blocking everything. Can you suggest which one of the conditions I need to use.

Thanks


Malcolm
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Re: Block Emails from certain Top Level Domains

Postby Code Crafters » Wed Feb 22, 2012 9:41 am

You would need to do the following logic to achieve that:

Condition:
NOT SMTP Sender CONTAINS With ".au;.ie;.us;.info;.me.uk;.co.uk;.org;.org.uk;.gov;.net;.sch.uk;.ac.uk;.ltd.uk;.uk.net;.gb;.eu;.ca;.de;.gg;.gi;.hk;.im;.it;.je;.jp;.ke;.kr;.mt;.nl;.nz;.se" (String List and NOT Case Sensitive)

Action:
Delete Email (or other actions)

You have to use "contains" rather than "ends with" as the SMTP Sender could be something like

"Bob Jones" <bob@domain.com>

Note I also added a . before each one to be more specific as something like au might appear in the middle of an email address not as part of the domain ending.
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Re: Block Emails from certain Top Level Domains

Postby talha » Thu Feb 23, 2012 11:50 am

what if ".au" is a part of the email address but not at top level for e.g. steve.austin@email.com. my question is whether this searches in the parts of strings or just matches the complete string only?
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Re: Block Emails from certain Top Level Domains

Postby Code Crafters » Fri Feb 24, 2012 9:27 am

You have to be clever enough to think of all the scenarios. For example, you could do 2 conditions:

NOT SMTP Sender ENDS WITH ".au;.ie;.us;.info;.me.uk;.co.uk;.org;.org.uk;.gov;.net;.sch.uk;.ac.uk;.ltd.uk;.uk.net;.gb;.eu;.ca;.de;.gg;.gi;.hk;.im;.it;.je;.jp;.ke;.kr;.mt;.nl;.nz;.se" (String List and NOT Case Sensitive)
AND NOT SMTP Sender CONTAINS ".au>;.ie>...;.se>" (String List and NOT Case Sensitive)
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