Email Sending Issues

“Sending’ reported error (0x800CCC65) : ‘Your outgoing (SMTP) e-mail server has reported an internal error. If you continue to receive this message, contact your server administrator or Internet service provider (ISP). The server responded: 503 Valid RCPT command must precede … Continued

This usually means that the email was caught by a spam filter on the recipient’s mail server. We recommend that you ask the recipient to check the spam / bulk mail folders first. If the message still cannot be found, … Continued

You might not be able to send mails with attachments because of: A local antivirus / security application running on your local computer. It might detect that the attachment is either not permitted or is infected by a virus. In … Continued

The message “invalid HELO command” means that the application you are using for sending mails does not comply with corresponding RFC standards. This happens rarely and the only solution is to use another application for sending mails.

The “Too many recipients” error will be displayed when: An email message has more than 40 recipients (or 80 under GoGeek plans). A domain tries to send more than 400 emails per hour (or 800 emails/hour if hosted on GoGeek … Continued

The error is present when the Outgoing SMTP server email settings (hostname, username and password) aren’t properly configured on your device. If you are a XonHost customer you can find your email settings in cPanel, under -> Email Accounts -> More -> Configure Email Client. … Continued

Often, if an email delivery fails, the original email is returned to its sender with an error explaining what caused the issue. These returned emails are referred to as bounce-back emails. We prepared a list of common bounce back errors … Continued

The most common problem when sending emails is incorrect mail client configuration. You can easily confirm if the problem is with your email client’s settings by attempting to send your message via Webmail. Webmail clients are preconfigured to connect to the … Continued

Yes, if you want to use sendmail with your scripts and applications, you need to configure it to work with an existing email address. On XonHost servers your script will not send emails if you enter a non-existing email address.

The limit on the size of a single email message on XonHost’s shared servers is set to 80MB. The limit on the size of a single email message when sending via webmail is set to 50MB. For all accounts hosted … Continued