# Email not sending or arriving: step-by-step troubleshooting

https://civema.com/en/knowledgebase/article/email-not-sending-or-arriving-step-by-step-troubleshooting

Separate sign-in failure, submission failure and recipient delivery failure. Test one example instead of repeatedly resending it.

## Incoming mail

Verify the recipient address, authoritative MX records, active mailbox and available storage. Search Junk, Trash and other folders, and review forwarding and filtering rules.

## Outgoing mail

Use IMAP: kurumsal.civema.com, port 993 with SSL/TLS. SMTP: kurumsal.civema.com, port 587 with STARTTLS or 465 with SSL/TLS. Both require your full email address and mailbox password. Enable outgoing server authentication.

If webmail works but a device does not, inspect its stored password, SMTP settings and network restrictions. Do not use port 25 in the mail application.

## Report useful evidence

4xx replies usually indicate temporary failures; 5xx replies usually indicate permanent rejection. Read the accompanying explanation. A Sent-folder copy is not proof of inbox placement. Provide the time zone, sender, recipient, application, full error and message ID when available. Never provide passwords or private keys.

[View business email plans](https://civema.com/en/business-email)