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Blocking mail from a country domain
- onside
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06 Aug 2009 17:48 #1
by onside
Blocking mail from a country domain was created by onside
Hi - is there a way to block incoming mail from an entire country ? We're receiving a lot of spam from Russia at present.
Vigor 2600vg with a SBS2003 server. (Can't find a way to use exchange to do this)
Thanks for any suggestions
JimC
Vigor 2600vg with a SBS2003 server. (Can't find a way to use exchange to do this)
Thanks for any suggestions
JimC
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- mordorf
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06 Aug 2009 19:35 #2
by mordorf
Replied by mordorf on topic Blocking mail from a country domain
The only way I can think of is to create a firewall rule that blocks inbound smtp (tcp port 25) from the allocated countries ip address ranges.
See here for a list >http://www.countryipblocks.net/country-blocks/cidr/?country=RU&view_country_ips=Submit+Query
See here for a list >
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- onside
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06 Aug 2009 21:43 #3
by onside
Replied by onside on topic Blocking mail from a country domain
Many thanks for your suggestion and the link - I checked this out but there are hundreds of ip ranges for russia. How would I get these into a filter rule ?
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- sbv3000
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07 Aug 2009 17:40 #4
by sbv3000
Replied by sbv3000 on topic Blocking mail from a country domain
you could consider third party options like ironport, brightmail or messagelabs. Not cheap but the payback on wasted time for users could make a case stand up
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- stuart elliott
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07 Aug 2009 20:50 #5
by stuart elliott
Replied by stuart elliott on topic Blocking mail from a country domain
I can heartily recommend the
Barracuda Networks
spam and anti-virus devices to sit between your router and email users, absolutely excellent piece of kit, we've had one for about 2 years now, and blocked well in excess of two million spam messages on a 100 user system.
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- onside
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07 Aug 2009 21:24 #6
by onside
Replied by onside on topic Thanks
Thanks for your suggestions. Have checked them out but we're on a tight budget with only 4 users. So free or low cost is what we're looking for but I think that's probably like looking for the holy grail. Thanks anyway. It's a shame Exchange doesn't provide a simple check box for blocking 'ru'
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