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Re: Email server block our e-mail
"Newbie" wrote in message
news:A2290CFC-00B6-403E-BBD3-D6E501FE6E95@microsoft.com...
>
> We have about 1000 customers.
> We use outlook to send our monthly special to our customers.
> We use distribution list to send out.
> But some e-mail servers, i.e. msn.com earthlink.com att.net... block
> our
> e-mail.
> How can we solve this problem?
You use a personal e-mail *client* as a hacked up mail server to issue
your monthly bulk mailing? There are better bulk mailing tools.
Do your e-mails use a template? If so, a domain will see multiple
copies of what is basically the same content for multiple e-mails but
sent to different recipients. That makes it look like spam. The
domain's mail server computes a hash of the incoming e-mails and then
checks when the same e-mail gets repeatedly received and if the same
e-mail is targeting multiple recipients at that domain. Lots of the
same content e-mail delivered to multiple recipients at the same
domain qualifies as spam. If all you change in each copy of your
newsletter is the recipient's name then the vast majority of its
content remains unchanged, so the same e-mail is being delivered to
multiple accounts at the same domain. To the domain, that is spam.
This is especially true if you shotgun out your bulk mailing rather
than trickle it out to, say, 10 recipients at 5 or 10 minute
intervals. A thousand recipients divided into 10 listed on each bulk
mailing would mean 100 mail sessions, and at 5 minute intervals would
mean it would take around 8 hours to send so they would all go out in
the same day. Outlook obviously doesn't have such options to limit
the number of recipients per mail or how long to wait between each
mail session and why you need to look at a bulk mail program.
Some anti-spam filters also use DCC (also called P2P) to check how
many recipients have recorded that they have received the same e-mail.
Recipients that use DCC to check for bulk mailings can often specify
how many recorded copies of the same e-mail will exceed their
threshold and be identified as bulk mail. For example, if I use DCC
to see how many other users have received the same e-mail (and they
also use DCC to record the hash of that e-mail along with a recipient
count), and if I set the threshold to, say, 50 then any e-mail that
has been received by 50, or more, recipients will get tagged as bulk
mail and my rule says to move it into my Junk folder which has
auto-archive enabled on it to delete those suspect e-mails after 3
days (but other users may configure to just delete the bulk mail).
Have you checked if your mail server's IP address is on a public DNSBL
(DNS blocklist)? Regardless of whether or not you believe that your
bulk mailing is spam, perhaps some of your recipients decided it was
spam and reported you to the DNSBLs, like SpamHaus or SpamCop. Then
if they (or their mail provider) uses those blacklists then they
reject your e-mails during the mail session. Since you posted using
Microsoft's NNTP server, and since Microsoft chose to not comply with
the intended usage of the NNTP-Posting-Host header, then Microsoft
operates an anonymous NNTP server. I can't tell what is your IP
address but then it probably won't show what is the IP address for
your domain (which I could still lookup). So you will have to check
if your IP address is currently on the blocklists.
Be aware that providing an opt-out in your mailings might comply with
CAN-SPAM law but users are more unforgiving. They require to FIRST
elect to opt-in, and anything they did not first opt-in to receive
will have the opt-out ignored and reported as spam because they, the
recipient, never did authorize the receipt of the unsolicited e-mail.
You never mentioned if your bulk mailing was purely an opt-in first
setup. I don't care if there is an opt-out link at the end of an
unsolicited e-mail. If I didn't opt in then the e-mail is unsolicited
and qualifies to be reported as spam.
>> Re: Email server block our e-mail
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