[NMLUG] Email service that does graylisting/razor/spamfiltering/etc?

[havoc at harrisdev.com (havoc)]

I was doing some mucking around looking for some solutions for a private 
school that I will be going to work for this summer. Much to my 
surprise, I discovered that Google will do domain email hosting! The 
enterprise version with all of the fixin's is pretty steep at 
$50/user/year, but the free version might be acceptable for a lot of 
small businesses:
http://www.google.com/a/help/intl/en/admins/editions.html

Not reflected on this page, they also will do hosting for accredited 
educational institutions for free with most of the "enterprise" featured 
enabled.

I'm interested in your thoughts.

jody

Kelly Jones wrote:
> I have about 20 domains, and any email to any of these domains
> (anyaddress at any_of_my_domains.com) forwards to a single mailbox.
>
> I handle email for all these domains myself, but it's becoming a hassle:
>
>  % dictionary attacks mean I often get the same spam repeatedly
>
>  % I'm too scared to change my SMTP config (to setup graylisting for
>  example) for fear of breaking something and losing email [not that
>  99+% of isn't spam anyway...]
>
>  % My SMTP server sometimes gets flooded w/ connections (probably not
>  denial-of-service-- just excess-of-spammers), delaying legit email.
>
> In short, I want to to give up: running a mail server used to be easy,
> but it's not anymore.
>
> Is there a reliable, fairly inexpensive service that does graylisting,
> razor-checking, sender address verification, RBL-checking, and other
> spam filtering? Specifics:
>
>  % I'd like to set the MX records for all 20 domains to their server
>  and be done with it.
>
>  % I do NOT want to forward email (to a spamarrest.com address for
>  example). Forwarding means I still have to run my own mailserver +
>  nullifies RBL checks, graylisting, etc.
>
>  % I'd like the option of having challenge-response ("you sent me an
>  email + I don't know you -- go here and prove you're human"), but
>  also the option of turning it off.
>
>  % Senders should always be notified (ideally at the SMTP level) if
>  their message is rejected (ideally w/ a custom reject message that I
>  choose). Messages shouldn't just disappear.
>
>  % I'd like the ability to check my email via POP/IMAP. Size limits
>  are OK: I plan to download email regularly.
>
>  % Most of the email for my domains will come to just me, but I'd like
>  the option to forward a copy of emails to certain addresses/domains
>  to others. Example: email to *@domain1.com comes to just me, but
>  email to foofoo at domain1.com (that makes it through the spam filter)
>  comes to me and a copy gets forwarded to bob at gmail.com. This feature
>  isn't critical: I can probably setup Pine rules/etc to do what I want
>  if I have to.
>
> Any recommendations?
>
>   


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