Re: Spam issue

Don,

Try creating an SPF record in the Public DNS and implementing SenderID
within INF v2 on your server...

Cary

PS. With the SPF Record, becareful: be sure to include any "third party"
thingies that might send e-mail on your company's behalf...such as a web
site that might take/process orders for you or similar. Another example
would be any smart hosts that you might use.

PSS The SPF record might look something like v=spf1 ip4:23.34.45.56 -all
This tells everyone who looks that the Public IP Address of the sending
e-mail server for "yourdomain.com" is 23.34.45.56 and that if it is not that
IP Address (read: supposed sending server of an e-mail from
"yourdomain.com") then this message should fail.


"Don Tagliatelli" <vincent_huybrechts@xxxxxxxxxxxxxxxx> wrote in message
news:Iy2Ij.93684$3f1.79659@xxxxxxxxxxxxxxxx
Hi,

There's one user in our network who gets a lot of spam since last week.
I'm talking about 2 mails per minute. Mostly undeliverables of spam that
seems to be sent out of that users mail account.
There's no virus or something.

All other users get very little or no spam. Were using IMFv2 with latest
updates.

Anyone knows what could be the problem?

Or should we installl a 3rd part spamfilter too?

Thanks,

Vincent



.

Relevant Pages

  • SBS 2003: Protect Exchange against SPAM (how to?)
    ... I've been having a lot of spam that seems to come from my own users. ... I've read about the SPF record and i wish to implement this on my DNS ... I know there are SenderID tabs on Exchange server manament. ... Currently we're sending all email via the Internet Provider server ...
    (microsoft.public.windows.server.sbs)
  • Re: Own Public DNS Server
    ... As soon as I had RR set up my PTR record, ... my issue is not really spam. ... You don't have a proper public DNS A/C/MX record for your sending ... As for IP/ISP on block lists, or you being on a listed Dynamic IP, well, ...
    (microsoft.public.windows.server.sbs)
  • Re: SPF record question
    ... My MX record is in public DNS. ... PTR in an SPF record because of "expensive DNS lookups." ... filtering enabled on my Exchange server and some other domain has an SPF ... Microsoft CSS Online Newsgroup Support ...
    (microsoft.public.windows.server.sbs)
  • Re: Own Public DNS Server
    ... servers doesn't mean they categorize it as spam but simply the fact that ... my issue is not really spam. ... You don't have a proper public DNS A/C/MX record for your sending ... As for IP/ISP on block lists, or you being on a listed Dynamic IP, well, ...
    (microsoft.public.windows.server.sbs)
  • Re: publishing SPF record to DNS
    ... would eventually consider the IP of a valid mail server for our domain as the ... only for the EDGE transport server & not the hub Transport. ... an internal network a SPF record can still be created for the email domain - ... we need to have the SPF record published in our public DNS zone as a TXT ...
    (microsoft.public.exchange.admin)