I can receive email but not send it?

In this article from the TripleZero iT Hosting knowledge base we explain: I can receive email but not send?. We describe the goal, the preparation and a clear method that you can follow step by step.

This manual is written for customers of TripleZero iT Hosting and assumes common configurations on shared hosting, reseller environments and control panels such as DirectAdmin, CyberPanel and Plesk.

What you need

• Access to the customer panel or the TripleZero iT Hosting customer panel.
• Your domain name and any login/mailbox details.
• A current browser and, where applicable, FTP/SSH access.
• Preferably a recent backup before making structural changes.

Step-by-step approach

1. Log in to the appropriate panel at TripleZero iT Hosting and select the domain or account affected by the change.
2. Check that you have the correct environment (production vs. test) and note the current settings.
3. Perform the action corresponding to “I can receive e-mail but not send?”. Work calmly and do not change multiple critical options at the same time.
4. Save changes and test the result: website, email or DNS — depending on the subject.
5. Document what you changed so you can roll back later or help support more quickly.

Deeper explanation

The topic “I can receive email but not send?” often affects multiple layers: DNS, web server, mail server, application (e.g. WordPress) and account limits. Problems usually arise when one layer is changed without checking the others.

For TripleZero iT Hosting, we recommend first verifying that DNS points to the correct name servers, then checking control panel settings, and only then changing application settings (plugins, themes, .htaccess).

Email-specific considerations

Always test both receiving and sending. Send-only problems often indicate SMTP authentication, port blocking at the ISP or missing SPF/DKIM.

Use webmail as a reference: if webmail works and your client does not, the cause lies in the client settings.

Post-completion checklist

• Does the website work over HTTP and HTTPS without certificate errors?
• Are test emails delivered and not marked as spam?
• Are limits (disk, inodes, bandwidth) still within the package limits?
• Are there no unintentional redirects, firewall blocks or PHP errors in the logs?

Common bottlenecks

• DNS propagation: changes are not immediately visible everywhere.
• Wrongly selected domain or user in a reseller environment.
• Cache (browser, CDN, LiteSpeed/OpenLiteSpeed, WordPress plugins) showing old content.
• Missing permissions on directories or wrong document root.

When to enable support

If you get stuck after these steps — for example with persistent mail errors, SSL problems, or an unreachable site — open a ticket at TripleZero iT Hosting. Please include domain name, time, error message (screenshot or exact text) and what you have already tried.

Do you still have questions after following these steps? Contact TripleZero iT Hosting support via the ticket system or email. Always mention your domain name and a clear description of the problem, so that we can help you faster.

Also view other articles in the knowledge base for additional explanations about hosting, email and security.