how successful is spamassassin in your firm ?

['chris']

hi

How successful is spamassassin in your firm ?
I find on the Internet, that spamassassin could filter
only up to 20%-30% really spam.
Is it true ?
And for a produktive firm (about 250 users),
I should not use spamassasin.
I should take a spam appliance.
Are you agree ?

kind regards
chris

[Stuart Browne · Accepted solution]

I use spam-assassin here, with both DCC and Razor connections, and get about 70-80% filter rate. This is without Learning mode.

[Steven E. Protter]

I am a fan of spam assassin.

I have several tools.

A database of anyone that has ever sent me or my customers spam.

spamassasin plus a few of the other tools that come with squirrelmail.

I'm careful myself not to give email address out except for throwaway address.

I get personally one spam every couple of weeks.

My customers who are not careful still get a hefty volume but its under reasonable control.

SEP

[renarios]

Hi Chris,

I also use spamcop. Since then my spam mails are reduced with 99%.
You can enable this by adding the line:
dnl # Anti spam
FEATURE(`enhdnsbl', `bl.spamcop.net', `"Spam blocked see: http://spamcop.net/bl.shtml?"$&{client_addr}', `t')dnl
Visit www.spamcop.net before and read well.

Good luck!

Cheerio,

Renarios

[Gopi Sekar]

i have used spamassassin with Razor and online list of ip address.

it reduced spam by over 80% with one single catch that it required internet connection and delayed mail delivery process.

spamassassin if called via sendmail gets forked for each new mail to check for spam, so if your server gets more than 30 mails per minute then that many instances of spamassassin will be running and its more likely that your server goes for a toss.

spamd, daemonized version of spamassassin, works great in this kind of scenario.

Regards,
Gopi

[Bejoy C Alias]

Hi,
I will suggest products like Trend Micro's IMSS, if u can afford , which we are using in our company and we r able to filter spam and virus mails at less than 1 % false positives ( more than 99% is true positives as per our logs ) .

['chris']

but is it Trend Micro's IMSS for free like spamassasin or it costs money ?

[Bejoy C Alias]

Trend Micro is not free , that is why i wrote u can go for it if u can afford...
But it is a better solution if u can buy this product.