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There are many reasons why an email message sent to you doesn't arrive in your Krystal inbox. Please help us troubleshoot by checking each of these steps carefully to eliminate them before raising a Support Request.
If you are ABSOLUTELY sure you have not changed any configuration settings then you can skip to STEP 5
Step 1 - Check correct MX records are configured for your domain
The MX records (available from the MX Entry icon in cPanel) should be set to
You can check this in
nslookup -ty=mx yourdomain.com
This will return something similar to this
krystaldemo.co.uk MX preference = 10, mail exchanger = mx1.krystal.co.uk
krystaldemo.co.uk MX preference = 20, mail exchanger = mx2.krystal.co.uk
This shows that krystaldemo.co.uk is configured correctly for our servers (mail exchanger = mx1.krystal.co.uk and mail exchanger = mx2.krystal.co.uk). If you do not have these two entries, then please read the guide on managing your MX entries to correct your MX records. If your domain is managed elsewhere then you must set the MX entries manually using the tools available on the foreign system.
Step 2 - Check that your domain is configured correctly in SpamExperts
SpamExperts is Krystal's spam filtering service. mx1.krystal.co.uk and mx2.krystal.co.uk are the SpamExperts servers themselves. Your incoming email lands on SpamExperts first, gets inspected for spam and malware and then it gets delivered to your Home Server and finally into your mailbox. Normally this process takes a few seconds. Make sure that your delivery Route is configured correctly.
Step 3 - Clear the Callout cache in StriKe
If you recently added the mailbox which is experiencing difficulty, then it is possible that the mailbox is being seen as invalid by SpamExperts - particularly if someone tried to send you email before you managed to configure the mailbox. Clear the Callout cache. This won't make a missing message magically appear, but if you ask your correspondent to re-send the email message to you, it should be delivered correctly.
Step 4 - Ensure your domain is set for local delivery
It is possible that your domain has been incorrectly set as a Remote Mail Exchanger. This means that your Home Server would reject any mail it received for your domain. It is simple to correct your domain to a Local Mail Exchanger by reading How to configure MX records and mail routing.
Step 5 - Check the message was received by SpamExperts and isn't in your Spam Quarantine
The SpamExperts system might have classed the incomming message as spam, or found some other issue with it - or might not have received it at all.
Step 6 - Check that your mailbox is not over quota
If your mailbox or cPanel account are over quota then you won't be receiving any new mail.
Step 7 - Submit a Support Request
If all of the above looks like it's in good shape, then by all means submit a Support Request including the following information: