Add the mailbox in Thunderbird
Open Account Settings → Account Actions → Add Mail Account and enter your display name, full email address, and password. Even when Thunderbird proposes settings from DNS, expand Configure manually and verify every field. Auto-discovery is convenient; accepting a hostname for the wrong product does not create a valid connection.
Remember the password only on a private device, and confirm the proposed username is the complete address.
Set incoming protocol to IMAP, use the product-specific hostname, port 993, and SSL/TLS.
Use 587/STARTTLS or 465/SSL-TLS; select Normal password and enter the full address as username.
Thunderbird field reference
| Type | Corporate server | Port/security | Authentication |
|---|---|---|---|
| IMAP | securemail.eurovdc.eu | 993 SSL/TLS | Normal password |
| SMTP | securemail.eurovdc.eu | 587 STARTTLS | Normal password |
| Alternative SMTP | securemail.eurovdc.eu | 465 SSL/TLS | Normal password |
| POP3 | securemail.eurovdc.eu | 995 SSL/TLS | Normal password |
SMTP profiles and identity selection
Multiple accounts can create similar profiles under Account Settings → Outgoing Server (SMTP). Check the Outgoing Server selector for each account. A mismatched profile may authenticate with another mailbox and repeatedly request a password. Give profiles clear domain-based descriptions.
Folder mapping and duplicate sent mail
After initial synchronization, inspect Drafts, Sent, Archive, and Trash. Map special folders to their server equivalents under Copies & Folders. If sent mail appears twice, the server and Thunderbird may both save copies; retain only one method. Do not close Thunderbird while a large mailbox performs its first indexing pass.
Password and certificate issues
If webmail succeeds but Thunderbird fails, remove the stale saved password and enter it again. Correct the hostname instead of adding an exception for a certificate-name mismatch. Offline mode, an antivirus mail proxy, or a corporate firewall can interfere; a controlled test on another network helps isolate them.
For domain authentication, read SPF, DKIM, DMARC and deliverability.
EuroVDC product note and shared technical reference
First confirm which product hosts the mailbox. Corporate Email (Mailcow) uses securemail.eurovdc.eu for incoming and outgoing mail. Hosting email (DirectAdmin) uses mail.yourdomain.com or the server hostname supplied in the service activation details. Using one product's hostname for the other can cause connection or certificate-name errors even when the password is correct.
| Protocol | Secure port | Encryption | Purpose |
|---|---|---|---|
| IMAP | 993 | SSL/TLS | Recommended; synchronizes folders between devices |
| SMTP | 587 | STARTTLS | Recommended outgoing connection |
| SMTP | 465 | SSL/TLS | Alternative outgoing connection |
| POP3 | 995 | SSL/TLS | Only for specific download requirements |
The username is always the full email address. SMTP authentication is mandatory; use the same full username and mailbox password as incoming mail. Do not select Microsoft 365 or Outlook.com, and do not use Microsoft-hosted server names. Corporate webmail is https://mail.YOURDOMAIN.com/user; replace YOURDOMAIN.com with your domain.
Client area and DirectAdmin path
- Sign in to the EuroVDC client area.
- Open the relevant product, then view Connection Settings and the DNS wizard.
- Record the server name, account-specific DKIM text, and displayed DNS status.
- For Hosting email, sign in at https://SERVER:2222 or https://DOMAIN:2222. Open Email Accounts, create or locate the mailbox, then use “+” → Configure Email Client on its row to obtain the exact hostname and ports.
Corporate Email DNS summary
| Name | Type | Target/value |
|---|---|---|
| CNAME | securemail.eurovdc.eu | |
| @ | MX | securemail.eurovdc.eu, priority 10 |
| @ | TXT | v=spf1 mx ip4:45.84.90.12 -all |
| dkim._domainkey | TXT | Account-specific DKIM value from the DNS wizard |
| _dmarc | TXT | Commonly v=DMARC1; p=reject; adkim=r; aspf=r; pct=100 |
| autodiscover and autoconfig | CNAME | securemail.eurovdc.eu |
Autodiscover and autoconfig help compatible applications propose server settings; they do not remove password security or SMTP authentication. Always compare discovered values with the product screen. DNS changes may appear differently across networks until cached records expire.
Quick checklist
- Corporate Email and Hosting email have been distinguished.
- The full email address is entered as the username.
- 993/SSL-TLS and either 587/STARTTLS or 465/SSL-TLS are paired correctly.
- SMTP authentication is enabled and its password is not blank.
- Webmail, receiving, and sending have been tested separately.
- DNS matches the wizard, and the exact error and test time are recorded.
For a visual reference, download the Email Setup Card from PDF help files. If the issue remains, send the mailbox address, device/application version, complete error, and screenshot to support@eurovdc.eu. EuroVDC services operate from Sofia, EU; never include your password in a support request.