If you receive the following message while trying to send emails, the issue could be...451 Error While Writing Spool File
This message indicates that your email is not configured properly. Please make sure you are...535 Incorrect Authentication Data
This error is commonly seen with mailbox file permissions in cPanel. Root access is...550 Error
One of the most common errors to come across in web hosting is a 550 error. This error can...Are you able to receive emails but not send?
Many major internet service providers (ISPs) block port 25, the channel used for...Are you able to send emails but not receive?
If you can send email but cannot receive email, there are several likely causes to...Can I Change My IP to Avoid Blacklisting?
Sometimes a country or email filter will subscribe to a blacklist that may disrupt some of...DMARC - Rejection Emails
What is DMARC? DMARC standardizes how email receivers perform email authentication using the...Disabling IDLE for IMAP
The majority of mail clients employ a function called IDLE (otherwise known as IMAP push)...Does your email client suddenly claim your password is wrong, even though you have not changed any settings?
All of our shared servers have a 30 check per hour per IP address limit. If you hit this...Email Trace
cPanel's Email Trace icon is intended for troubleshooting email routing issues. With this...Email Troubleshooting
Email Troubleshooting to get your mail working: Email Troubleshooting Make sure you...Error : Dictionary Attack
Dictionary Attack A method often used by spammers. They send various emails or passwords...Full Headers, How to Enable
The Value of a Full Email Header Here are few reasons it may be necessary to review the...Horde and Internet Explorer 8 Problems
Users of Internet Explorer 8 (IE8) and Internet Explorer 7 (IE7) may experience some...I Cannot View Sent, Trash, Drafts, Junk and Other Folders
If your Sent, Trash, Drafts, Junk and other IMAP folders are missing, subscribe to them...I Changed My MX Record and I Am Not Receiving Any Email at My Mail Server
If you ever send mail from any site that is on the same server as that upon which your...If emails were sent to my address before the email was created, is there a way to get those emails?
If an email is sent to an email address that does not exist, there is no possible way of...Internal Email is not being Received
If you cannot receive mail from yourself by means of sending from a form or from a...Invalid maildirsize error
How to fix the error "invalid maildirsize": Login to your server via FTP or File...Missing folders after converting to maildir
If you come from a host who does not use maildir, we must convert your email.Once the...Outlook Error Codes
Outlook Express messages IMAP and POP3An unknown error has occurred. Subject 'test',...Outlook Malfunctioning
If a message is stuck in the Outbox, please go to File and choose Work Offline. Close...Problems with Spoof, SPF
What is Email Spoofing? Email spoofing is when the email header's "From:" line is...Recipient Blacklisting or Rejection
Important Note: This article is specifically for email that is not being delivered and...Return Messages
Email issues can be awfully frustrating, and the bounce-back message announcing that a...SMTP Timeouts on Localhost
If you are receiving timeouts while attempting to send email over SMTP on localhost or if...Showing Email Headers in Webmail
Webmail Smartermail Horde Webmail Log into Horde Webmail. Open the email...Too many SMTP connections?
We limit 25 concurrent connections per your IP address. If you are getting this error,...What will happen to my undeliverable emails?
Email server unavailable for delivery. If the receiving server, domain, or mailbox name...Whitelist joudiSoft for Outlook, Hotmail, MSN or Live Email
joudiSoft customers may find they are having difficulty receiving messages from...Why Am I Getting Spammed and How to Prevent It?
Spam is an ongoing issue that costs businesses and individuals billions of dollars in lost...Why Do I Get an AJAX Failure Error in the Email Section of cPanel?
AJAX scripting has been integrated into the cPanel control panel. You may have noticed...Why Won't My Email Address Work (POP Client)?
Make sure you set it up exactly by looking at Flash / Non Flash Make sure your user name...Why does my webmail show Internal Server Error User username is over quota cpsrvd?
If you see an error that looks like this: When you log into webmail, it can be caused...Why is My Email Account Suddenly Empty?
There are several possible reasons for why your emails seem to have suddenly disappeared...winmail.dat Attachment
Have you ever received an email with an unreadable file attached called winmail.dat? This...