Premium Email FAQs

Q) How do I report spam or phishing messages I’ve received from domains hosted by your service?
A) If you are an individual wishing to report an abusive email, we recommend forwarding the abusive message to [email protected]. Our anti-abuse specialists will process the complaint and take the necessary remediation steps.


Q) What is the maximum email message size I can send?
A) The maximum size for any message, with or without an attachment, is 50 MB.


Q) How can I resolve issues delivering mail to the Premium Email system?

A) If you notice problems with your deliverability, check that you are not on a blacklist. There is a collection of the blacklists used by our system on the External Resources page.

You can check this by using a service such as the Spamhaus, Sorbs, or Lashback Unsubscribe Blacklist.

Also check to make sure you are using proper authentication, such as:

Contact Us or Submit a Support Ticket for further assistance.



Q) Why am I receiving bounces stating an IP is blacklisted?

A) Blacklists are tools mail providers use to block mail from senders the industry-at-large considers untrustworthy. The answer to this question is conditional on whether you are trying to send email to users hosted on our service or other services.

If you’re attempting to send email to our service, then your connecting IP address (the IP address of the mail system you are sending mail from) is on one of the email blacklists we use as part of our spam filtering. These lists are used across the email industry. They are well-known, well-supported, and we have had years of experience using them with a high degree of success. In our SMTP response messages (and corresponding bounce messages) for email blocked by one of these lists we provide basic information needed to remediate the listing including the specific list that your IP was found on.

If you’re attempting to send email from our service and are receiving a bounce message, then one or more of our sending IP addresses has been blacklisted. No action on your part is necessary as we closely monitor the sending reputation of our IP addresses, and respond as quickly as possible to any listings. We strive to maintain professional and cooperative relationships with as many email and blacklist providers as we can in order to diagnose, remediate, and delist our sending IP addresses.

The exact blacklists we use can be found in the External Resources section of this site, under the ‘Sender Reputation’ group.



Q) I’ve hit a sending limit; what should I do?

A) Sending limits are intended to ensure a small set of customers cannot consume all the resources and degrade the service for everyone. If you find yourself hitting a sending limit, there are some things you can do. Typically, your options center around who you are sending email to: users on your domain (internal), or users on other domains (external).

If you are sending to users internally, then you can utilize features such as distribution lists to consolidate your recipients on each message.

If you are sending mail external to your domain, we consider email volume in excess of the daily sending limit to be high-volume, and a bulk emailing service is recommended. These services specialize in properly delivering higher volumes of email to many recipients. They offer features like recipient hygiene to help ensure your emails are accepted by email providers across the internet.

The specific sending limits of our system can be found on the Email Limits page which is under the System Information navigation.



Q) Why was my email attachment blocked?

A) We, as well as other email providers and software vendors, generally block a common list of attachment types that can cause problems for end users' computers when sent via email.

For example, we are blocking all attachment types classified as "unsafe" in Microsoft Knowledge Base Article - 262631.

It is possible that other extensions will have to be blocked in the future, as virus authors will attempt to exploit new file extensions as they become available. Therefore, at our discretion we may also block other attachment types which are deemed to be unsafe or which represent a possible email-borne threat. We reserve the right to block attachments without warning or notice to ensure the integrity of the email service and its users.

Please also note: the maximum size for an attachment in our Hosted Email environment is 50mb (including message headers and all content in the body of the message).



Q) Do you provide bulk sending services?

A) We do not provide bulk email services. To ensure that your emails are sent safely and are not blocked, we recommend that you use a reputable bulk email service to send out your content. Reputable email service providers provide software and services to ensure that your bulk email is delivered in a way that mail providers will accept as good mail.

Have more questions?

For email delivery questions about domains hosted by our service, please Submit a Support Ticket.

To report abuse originating from Premium Email, please contact [email protected].

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