Date: Thu, 16 Feb 2006 11:18:44 -0500 From: "James Csoka" <jimcsoka@dominionfirstmortgage.com> To: <freebsd-questions@freebsd.org> Subject: Re: Blocking an individual email address Message-ID: <01f001c63314$a8c01180$2e07a8c0@domfirst.local> References: <MIEPLLIBMLEEABPDBIEGEECLHCAA.bob@a1poweruser.com>
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----- Original Message ----- From: <bob@a1poweruser.com> To: "James Csoka" <jimcsoka@dominionfirstmortgage.com>; "Ken Stevenson" <ken@allenmyland.com> Cc: <freebsd-questions@freebsd.org> Sent: Thursday, February 16, 2006 10:55 AM Subject: RE: Blocking an individual email address > > > Jim Csoka wrote: > > > No...I ran make maps, as well as make install for the blacklist > feature, > > > and make restart. > > > > > > However, here is something interesting. When I access my > corporate > > > email via openwebmail, it functions as I would expect....you > cannot send > > > or receive to the given address. However, when using Outlook > Express > > > (internal mail client at work), you can still send mail to the > address I > > > am trying to block. > > > > > > Why should this be so? > > > > > Are you sure Outlook Express is configured to use your FreeBSD > server > > for SMTP? Send an email to yourself using Outlook Express then > look at > > the message source and check the headers to verify which SMTP > server > > is sending the message. > > > > -- > > Ken Stevenson > > Allen-Myland Inc. > > > > Yes, I'm sure. It is the incoming and outgoing SMTP server. It's > the only > one we have. > > -Jim > > _______________________________________________ > > Yes that may be the only one you have, but that does not stop the > user from configuring their outlook express from using their > personal email account at their ISP. To stop this you can add > firewall rules to deny all LAN traffic out to ports 25 & 110 by > coding the private LAN ip address range in the rule "from" option. > Since your SMTP service is on the gateway box where the firewall is > your outbound port 25 will pass because your using the public ip > address or if that is not the case then just add a rule before the > deny rule to pass your SMTP LAN ip address. > > > > Understood. However, most everyone here in my office (a mortgage company of about 25 people) can barely even spell the word computer much less use one effectively. And, aside from that, I am running these tests from my windows client, so I can verify that it is configured correctly for the purpose of running these tests. Although I wish it were as simple as someone using a different SMTP server....it would make my life easier :P
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