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DPSWebServices » Mail Policy
Limits
There is a 500 outgoing email hourly limit per domain. This limit is also applied towards Mailman. If you send over this amount in any hour, most of the e-mails will bounce back with an undeliverable error. If this occurs, it will then take some time for your account to be able to send again so we recommend waiting at least 1 hour after this issue occurs to begin sending email again.
Many of our servers have a limit of 30 POP3/IMAP checks per hour per each user's connecting IP address. If you go over this you're likely to get a wrong password error
message or an error stating "login incorrect". If this occurs, please
wait an hour and it will automatically unblock you. To prevent this from
happening again, please make sure to disable auto checking or at least set
it to something higher such as once every 10 minutes.
Any mailing list larger than 5,000 addresses will require a dedicated server or VPS hosting solution from us. Note: Dividing one large list into smaller lists to get below this limit is not allowed.
There is also a limit to the number of Mailman mailing lists permitted
as follows (NOTE: This does not apply to other mailing list programs such
as PHPList. This only applies to Mailman.)
- Level I package: 20 Mailman mailing lists
- Level II package: 25 Mailman mailing lists
- Level III package: 50 Mailman mailing lists
- Reseller and Dedicated packages: Unlimited number of Mailman mailing
lists
Mailing Lists Rules
1. Any time you're sending a message no matter how large your e-mail list
is you must throttle it. We recommend you throttle it to at the very
least sending 1 email every 8 seconds. (Sending 1 every 8 seconds would
send 450 emails within 1 hour, keeping you below the 500 outgoing email
limit.) If the mailing list software you're using does not allow you to
throttle you must switch to an application or script that will. We
recommend PHPList, which can be found in your CPanel under Fantastico.
IMPORTANT: If you do not throttle and you try sending 500 emails, the
server will try sending all 500 in 1 second which is not possible on our
shared servers. This will cause a very high load on the server and the
entire server will be sluggish, potentially affecting your sites and
service, until this sending process is completed. It is our job to keep
the server up and running without being sluggish or experiencing issues.
Anyone who causes the server's load to go high will be suspended and the
process will be terminated. If you choose not to throttle, you will most
likely be suspended for crashing the server.
2. Any mailing list over 900 email addresses is only allowed to be sent to
during off-peak times to prevent high server loads. Off peak times qualify
as all day Saturday and Sunday, and 1AM - 8AM Eastern Standard Time,
Monday through Friday.
3. The list must be a Double Opt-In list. This means a user has subscribed
for a newsletter or other email marketing messages by explicitly
requesting it and confirming the email address to be their own.
Confirmation is usually done by responding to a notification/confirmation
email sent to the email address the end user specified. The double opt-in
method eliminates the chance of abuse where somebody submits someone
else's email address without their knowledge and against their will. You
will not be permitted to mail any mailing list that you were given or
purchased. In doing so, this will also be considered spamming and may
result in termination of the offending account.
4. Any unsolicited e-mail being sent will result in suspension or
termination of the offending account. We take a zero tolerance stance
against sending of unsolicited e-mail and other forms of spam.
5. Any mailling list MUST comply with all guidelines set forth by the
United States government. These can be found at:
http://www.ftc.gov/bcp/edu/pubs/business/ecommerce/bus61.shtm
6. No direct SMTP mailers are allowed. An example of this would be a
Darkmailer or The Bat!. Any mail should be sent through the local mail
server/MTA for further delivery by the server and not done directly by
scripts.
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