"Chris" <Chris@newsgroup> wrote in message
> SBS2003 R2, Static IP, Mail Send via Smarthost (BT) and Retrieve via POP3
> We have issues with POP3 mail not being routed due to undisclosed
> and BCC addresses etc and increasing problems with mail being returned
> to SPF records being incorrect.
> We have been advised that these can all be sloved by ditching our
> and POP3 and switching to SMTP for sending and receiving mail.
> I am totally dumb when it comes to Exchange issues, so I would greatly
> appreciate any comments on this.
I'm not fond of the POP3 connector. Depending on what type of ISP line you
have (some ISPs will not allow you to send email on their line, such as
Comcast residential non-business, or DSL lines, etc), you can send/retrieve
mail from your SBS, which along with indicating that mail is sent from your
WAN address in your SPF record (if your DNS hosting provider allows you to
make SPF records), should alleviate the problem.
More info on SPF. This will show you how to create the record, but it all
depends on your DNS hosting company if they allow or provision the ability
to create an SPF record. An SPF record is simply a text record that shows
what IP address and/or FQDN (such as mail.yourdomain.com), that is
authorized to send mail for your public domain name. If not sure, the best
bet is to call your DNS provider.
SPF: IntroductionMay 11, 2008 ... The Sender Policy Framework (SPF) is an
open standard specifying a technical method to prevent sender address
forgery. ... www.openspf.org/Introduction
One example of an easy SPF record is, which simply states that any email
from our domain can only come from 18.104.22.168, and nothing else. It
really only works if the receiving mail system checks for SPF records, which
most of them do these days.
v=spf1 ip4:22.214.171.124/32 -all
You can make it a little more elaborate as well, such as including your MX
record in the SPF, but honestly the one above will suffice:
v=spf1 ip4:126.96.36.199/32 mx a:mail.yourdomain.com
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responding engineers, and to help others benefit from your resolution.
Ace Fekay, MCT, MCTS Exchange, MCSE, MCSA 2003 & 2000, MCSA Messaging
Microsoft Certified Trainer
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