Caorda Logo
  • Design
    • Design
    • Website Design
    • Branding & Logo Design
    • Print Design
    • Our Design Process
  • Development
    • Development
    • WordPress Development
    • Website Development
    • Mobile Apps
    • Software Development
    • Database Development
  • Hosting
    • Hosting
    • Web Hosting
    • Email & Exchange Hosting
    • Secure File Hosting & FTP Solutions
    • Managed VPS Hosting
  • Digital Marketing
    • Digital Marketing
    • SEO Services
    • Google Ads & SEM
    • Social Media Marketing Services
    • Blog & Article Writing
    • Email Marketing Services
  • About Us
  • Blog
  • Careers
  • Our Work
  • Pay an Invoice
  • Support
  • Contact
  • +1.250.598.6772
  • COVID-19 Policy
Caorda Logo
  • Design
    • Website Design
    • Branding & Logo Design
    • Print Design
  • Development
    • Website Development
    • Mobile Apps
    • Software
    • Databases
  • Hosting
    • Web Hosting
    • Emails
    • Secure FTP
    • Managed VPS
  • Digital Marketing
    • SEO Services
    • Google Ads & SEM
    • Email Marketing
    • Social Media

FAQ

7
  • What version of Outlook am I using?
  • IMAP – Set Default Folders on Apple mobile device (IOS 18+)
  • How to Pay an Invoice
  • How do I receive Maintenance Notifications?
  • Spam – Email Rate Limit
  • Does Caorda offer cPanel ?
  • Where is my data located?

Spam

7
  • How do I manage my Quarantine?
  • How do I mark an email as Safe?
  • Can you block an entire country from sending you Email?
  • How do I block an email address or domain?
  • How do I manage my settings?
  • How do I login to my Spam firewall?
  • How are rules inherited?

Email POP/IMAP

24
  • IMAP – Set Default Folders on Apple mobile device (IOS 18+)
  • IMAP – Setup my Mailbox on an Apple mobile device (IOS 18+)
  • POP – Setup my Mailbox in Outlook 365 for Windows
  • How do I change my email password?
  • How do I archive my emails in Outlook
  • IMAP – I can’t see all my folders in Outlook
  • Password Policies
  • Administrator – Create a new email account
  • IMAP – Setup my Mailbox in Outlook on an iOS Device
  • IMAP – Setup my Mailbox in Outlook 365 for Windows
  • IMAP – Setup my Mailbox in Outlook 365 for Mac
  • IMAP – Setup my Mailbox in Mozilla Thunderbird
  • IMAP – Setup my Mailbox in Mac Mail
  • IMAP – Setup my Mailbox in Outlook on an Android Device
  • IMAP – Setup my Mailbox on an Android device (Android 12+)
  • IMAP – Setup my Mailbox on an Apple mobile device (IOS 16+)
  • POP – Setup my Mailbox in Outlook 2013-2016 for Windows
  • POP – Setup my Mailbox in Outlook 365 for Mac
  • POP – Setup my Mailbox in Mac Mail
  • Setup POP retrieval using GMAIL
  • Webmail – Add an Email Signature in Webmail
  • Webmail – How do I access my email from the Web ?
  • Webmail – Setting up mail forwarding
  • Webmail – Setting up out of office auto response

Email Hosted Exchange

8
  • EXCHANGE – Setup my Mailbox on an Apple mobile device (IOS 16+)
  • EXCHANGE – Setup in Outlook 365 for Windows
  • How do I archive my emails in Outlook
  • Webmail – How do I access my email from the Web ?
  • Enable Contacts on the Outlook App on Android
  • EXCHANGE – Setup Outlook 2010-2016
  • EXCHANGE – Setup my Mailbox in Outlook on an iOS Device
  • EXCHANGE – Setup my Mailbox in Outlook on an Android Device

FTP

12
  • How do I check my disk usage?
  • Add users to a Group
  • How to create a User
  • How to create a Group with Directory Access
  • Enforce SSH Key based Authentication for a User
  • How to receive files using the File Sharing option
  • How to Send files to a client using the File Sharing option
  • Reset your own Multi-Factor Authentication as a User
  • Reset a single User’s Multi-Factor Authentication
  • Setting up Multi-Factor Authentication for a Domain Group
  • Setup Multi-Factor Authentication for a Single User
  • Setup SSH Key Authentication for a User

Website

2
  • What is Caorda’s WordPress Maintenance Plan ?
  • Why am I not getting emails from my Caorda QA site ?
  • Home
  • Caorda Support
  • FAQ
  • Spam – Email Rate Limit
View Categories

Spam – Email Rate Limit

Subject: Message Delivery Delay
Message delivery has been delayed to the following recipients:
Recipient: [SMTP:**********]
Reason: Remote SMTP Server Returned: 450 too many emails from this sender, please try again later

 
You may get or are getting this notification if you are trying to sent emails to a large amount of recipients within a short period of time. The reason for this is by default your email service at Caorda is subject to a rate limit. Similar to other large vendors (GMail, Outlook.com) we limit the number of emails you can send overtime. This is used to prevent your mail account or website from being used to mass mail, be it on purpose or not.

Caorda has the following restriction setup:

  • 100 emails allowed in the last 30 minutes

This is a constant moving window, not a timer that resets every 30 minutes. If you were to send 90 emails just now, you will only be allowed to send another 10 emails in the next 30 minutes before the original 90 emails are no longer being counted towards your limit. Overall this allows you to send up to 4800 emails in a 24 hour period.

To give you some comparison:

  • Gmail limits you to 2000 emails in a 24 hour period
  • Outlook.com limits you to 5000 emails per day

If you are receiving the message don’t worry, “Message Delivery Delay” is exactly how it sounds, our mail system has accepted the email from your website/email client and the email will be delivered when it can.

If you are wanting to exempt an email address from being rate controlled you have have a couple options.

  • For small list reach out to your Caorda account manager or Caorda Support, for a small fee per email address and an acknowledgement that the emails generated by you are not spam we can remove the rate limiting on your email address.
  • For larger lists we have other services that may better fit your purpose.
Updated on February 27, 2024
How do I receive Maintenance Notifications?Does Caorda offer cPanel ?
  • This field is for validation purposes and should be left unchanged.

Our Address

401–3795 Carey Rd. Victoria, BC V8Z 6T8

Say Hello

  • +1 250.598.6772
info@caorda.com
  • Get Support
  • Our Services
  • Contact Us
  • LinkedIn
  • Facebook
  • Instagram
©2025 Caorda | Privacy Policy
Client Login
  • Design
  • Development
  • Hosting
  • Marketing