If you're able to send emails but are not receiving emails sent to your address, here are some common causes and solutions.

Case 1: You're able to send emails, but the emails sent to your email ID are not received. 

Check the MX record configurations of your email domain in the DNS page.

Multiple factors cause issues while configuring MX records. Troubleshoot all of them with these steps.

Case 2: You're unable to send or receive emails. 

➙ Domain expired/Invalid domain

Check the domain's status from the Zoho Mail Admin Console page.

If the status is "Yet to reverify your ownership," follow these steps to reverify.

Note: Based on the TTL you have set, it can take up to 12-24 hours for DNS changes to take effect. Using this tool, you can check the TTL value and try verifying after a while.

➙ Mailbox storage exceeded the allocated limit

When your account storage exceeds the allowed limit, your account will be blocked, preventing you from sending or receiving further emails.

You can try deleting unwanted emails or upgrading to any of the paid plans. If you are already subscribed to a paid edition, you can choose to purchase and allocate additional storage space.

After that, you can unblock the account by following these instructions.

Case 3: You're unable to receive specific emails.  

➙ Email filters

Try finding the email from the "All messages" view or through Search and check the folder name.

If you receive the emails in the "Newsletter" or "Notification" folder, it is because of Smart filter categorization. You can disable that by following these steps.

If you receive the emails in any other folder, check the Incoming filters configured and change the filter action. Learn more 

➙ Spoofing policy rejection

When an email is triggered from the website using the same email address or domain name as the email hosted with Zoho, it has to pass our basic header-based authentication process like SPF, DKIM and DMARC. If not, Zoho Mail's anti-spam filters will consider it as a spoofed email and reject it. Learn more

To avoid this, ensure the following configurations:

• The source server IP range/host is included on the domain's SPF record. Learn more

• DKIM configuration for the From domain is setup at the source SMTP server side. Learn more

➙ Emails from website contact forms

When you use a contact form, the emails are sent from your website hosting provider (Web Host). In most cases, the website's domain name matches the domain name in the email address they are sent from. For example: www.yourdomain.com/contact.html page will submit the details to contact@yourdomain.com.

In such cases, the source server assumes that the emails should be delivered locally because the recipient's domain name is the same as the sender's domain. To fix this:

1. Open the WebHost settings and choose the Remote Email Server option to denote that these emails should be delivered externally (i.e., MX-based email delivery process).

2. Check for any local email delivery configuration and switch off the WebHost's local setting.

In case you need further support regarding this, contact your respective DNS provider. This will ensure that emails from web forms reach the Zoho Mail servers and are delivered to the correct email accounts.

➙ Anti-spam policy

Our anti-spam filter provides this error when the source server IP address does not have  a proper FCrDNS (Forward-Confirmed reverse DNS) lookup. To fix this issue:

• The sender can contact their email administrator and make sure the IPs they use to send emails have this setup at the DNS.

(or)

• The source IP address can be added to the Allowed IP list, or the sender email address/domain can be added to the Trusted List (not recommended). Learn more 

Note: While adding values to the Trusted List, be cautious since the organization could be exposed to spam or phishing attacks as there is no spam check.

➙ Third-party RBL

If an IP address is listed on a few reputed third-party RBLs, our servers might reject the connections originating from them. To fix this issue:

• The sender can contact their email provider and ask them to allocate a reputed IP address to relay emails to our servers

(or)

• The source IP range can be added to the allowed IP list by following these instructions.

If you need assistance in troubleshooting, contact customer support at support@zohomail.com