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99.9% of our clients with Exchange Servers get filtered either through Postini, or MXLogic, or Appriver...or....to our recently setup in house solution...we have an Untangle unit in our office, we wash the mail through our own mail servers now...and deliver to our clients via a mail connector we setup. Untangle running ClamAV, Kaspersky, and CommTouch for spam filtering. They get their own Quarantine digests.
Microsoft Updates set to maintain. WSUS at clients where I can. Just as important as a desk AV product IMO.
how do you have that setup? you pass the mx records to your server then out again to the clients?
any reason? figure as postini reseller just let that handle it as you get spooling and a better solution than untangle.
We setup a routing group connector on our Exchange Server ...with a virtual SMTP connector for each client. It forwards mail to a DNS alias we make for each client...."exchange.clientsname.com", which points to their networks static public IP address. Clients MX record points to us...so their mail filters through our Untangle Super Bundle....passes onto our Exchange Server...which spits it to that DNS name...and onto their Exchange Server. Their Exchange Server has their SMTP set to receive only from our group of IP addresses.
The Untangle daily quarantine gets sent to the recipients mailbox just fine every morning at 6am...so they can easily manage that.
My colleagues son is a Cisco 'n *nix guru. He does a lot of customized services for people. He built us a few SMTP servers in some of his hosted servers out there....doing a couple of things. First..they perform backups for the MX record..in case for some reason our network is down...his servers are MX2 backups...and will "spool" the mail intended for clients until our server is back online. Second...they're both uses as outbound SMTP for our clients...so I setup our clients Exchange Servers to send their outbound mail through him. Custom ports..and he only allows the IP of their servers to connect.
We can do this solution fairly cheap..couple hundge a year for peeps. For small clients, Postini 'n stuff works great, or MXLogic or Appriver. But one thing...it's expensive as you start to get large..like above 40-50 users And for clients with high turnover..managing all those mailboxes at Postini or other is a pain in the friggin arse. What's nice about the solution we're doing...it does it on the domain level...don't have to worry about maintaining mailboxes for each user of each client. As staff come and go with each client...it requires no changes to their mail setup ..unlike postini or whatever.
Don't you have to pay for Exchange CALs for each of the mailboxes you're filtering, though? I would think that would be expensive...
Not to my knowledge...as far as I could tell with the licensing, since the mailboxes aren't hosted on ours...the Exchange Server and CALs are purchased on the clients end....they're just passing through our Untangle, and being routed through the connector onto their Exchange Server.
It's going through its first month of testing...so far so good, and if this works well, C2 is going to build a couple of *nix servers that we'll host to take the place of the Exchange connectors...since we'd anticipate heavier volume and don't want to place that on ours...
Looks like a lot of Fans of ESET out there. Any particular reason? I've never used it so I'm just curious.
Home: ESET NOD32 v4
Work: ESET NOD32 v4
Slacker..time to catch up....version 4.2!!!
Or...I change the wallpaper on your laptop to a nude of Bea Arthur!
So they have XMON for 4.2 now?? Nice. I've been putting v4 on servers as long as they weren't running exchange and they've all been fine so far.
You only need to install that ESET Mail Security for Microsoft Exchange Server on the SBS Box? Or still have to install the ESET 4.2 as well?
Guess they're not calling it XMON anymore...but "ESET Mail Security for Microsoft Exchange Server".
Captain - it does mention spam. I saw NSGroup-inc who I'm a reseller through has some webcast in a few weeks describing the updates maybe I will sit in.
Looks cool, but I can never test the spam since my clients use postini.
1.3 Types of protection
There are three types of protection:
1.3.1 Antivirus protection
Antivirus protection is one of the basic functions of the
ESET Mail Security product. It guards against malicious
system attacks by controlling file, email and Internet
communication. If a threat with malicious code is
detected, the Antivirus module can eliminate it by first
blocking it and then cleaning, deleting or moving it to
quarantine.
1.3.2 Antispam protection
Antispam protection integrates several technologies
(RBL, DNSBL, Fingerprinting, Reputation checking,
Content analysis, Bayesian filtering, Rules, Manual
whitelisting/blacklisting, etc.) to achieve maximum
detection of email threats. The antispam scanning cores
output is the spam probability value of the given email
message expressed as a percentage (0 to 100). Values of
90 and above are considered sufficient for ESET Mail
Security to classify an email as spam.
Another component of the antispam protection module
is the Greylisting technique (disabled by default). The
technique relies on the RFC 821 specification, which states
that since SMTP is considered an unreliable transport,
every message transfer agent (MTA) should repeatedly
attempt to deliver an email after encountering a
temporary delivery failure. A substantial part of spam
consists of one-time deliveries (using specialized tools) to
a bulk list of email addresses generated automatically. A
server employing Greylisting calculates a control value
(hash) for the envelope sender address, the envelope
recipient address and the IP address of the sending MTA.
If the server cannot find the control value for the triplet
within its own database, it refuses to accept the message,
returning a temporary failure code (temporary failure, for
example, 451). A legitimate server will attempt a
redelivery of the message after a variable time period. The
triplets control value will be stored in the database of
verified connections on the second attempt, allowing any
email with relevant characteristics to be delivered from
then on.
1.3.3 Application of user-defined rules
Protection based on user-defined rules is available for
scanning with both the VSAPI and the transport agent.
You can use the ESET Mail Security user interface to
create individual rules that may also be combined. If one
rule uses multiple conditions, the conditions will be linked
using the logical operator AND. Consequently, the rule
will be executed only if all its conditions are fullfilled. If
multiple rules are created, the logical operator OR will be
applied, meaning the program will run the first rule for
which the conditions are met.
In the scanning sequence, the first technique used is
greylisting - if it is enabled. Consequent procedures will
always execute the following techniques: protection
based on user-defined rules, followed by an antivirus
scan and, lastly, an antispam scan.
Yes looks good, honestly what is killing me with ESET is the spyware. I know spyware/malware is getting past all the antivirus I just wish ESET would incorporate like MBAM into the mix or something =)