[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [FW-1] Filtering incoming SMTP "from" your domain via SS
Title: Filtering incoming SMTP "from" your domain via SS We have remote users (usually from their
home computers) who like to be able to reply to messages, or send new messages,
and have everything look as if the email came from the company mail
server. Additionally, all of our outgoing email is scanned for viruses
(which cannot be guaranteed from any remote user).
Because of the above scenario, it is not
possible to have our remote users use their ISP's mail server as an outgoing
mail server for company email.
As a result, remote users are sending mail
(sometimes to our domain) that appear to be coming from our domain- since they
actually are from our domain, and also relaying off of our mail server to other
domains so emails appear to come from a company email address (the nice part
here is the outgoing virus scanning).
The downside of this is that, since we have
relay turned off from the outside, we have to explicitly allow users in by
entering them into the mail server configuration as allowed. This means
they have to have a static IP address or static hostname. In reality, many
cable-modem subscribers, although they have DHCP addresses, have the same IP
address for months or years- so it is not hard to keep up with. It is only
the dial-up users who have a problem (it is unusable for them, in
reality).
Marlo
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