How to Fix "Cannot Connect to Server" Error
Getting a "Cannot Connect to Server" error? This is usually a simple settings issue. Let's fix it!
Quick Fix #1: Check Your Internet Connection
Try this first!
- Make sure you're connected to Wi-Fi or have mobile data
- Open a web browser and try loading a website
- If the website doesn't load, fix your internet connection first
- Try switching between Wi-Fi and mobile data
Quick Fix #2: Verify Server Settings
The most common cause is incorrect server settings. The correct settings are also on the Dashboard, in the Connect your mail client card.
Incoming Mail Server (IMAP):
- Server: mail.atriomail.com (do not use a different subdomain like "imap.")
- Port: 993
- Security: SSL/TLS
- Username: Your FULL email address (user@domain.com)
Outgoing Mail Server (SMTP):
- Server: mail.atriomail.com (do not use a different subdomain like "smtp.")
- Port: 587 (or 465)
- Security: STARTTLS (or SSL/TLS for port 465)
- Username: Your FULL email address
🚨 Common Mistakes:
- ❌ Using the wrong subdomain (like "imap.") instead of the documented server address
- ❌ Using only your username instead of full email address
- ❌ Wrong port numbers
- ❌ Wrong security type (SSL vs STARTTLS)
Fix #3: Check Your Password
- Make sure you're using your MAILBOX password (not your control panel password)
- Try retyping your password carefully
- Check for extra spaces before or after the password
- If you recently changed it, update it in your email app
Fix #4: Restart Your Device
Sometimes a simple restart fixes connection issues:
- Close your email app completely
- Restart your phone/computer
- Open the email app again
- Try connecting
Fix #5: Check Firewall/Antivirus
Your security software might be blocking the connection:
- Check your firewall or security software for a blocked connection to mail.atriomail.com
- Add mail.atriomail.com to its allowed list
- Try connecting to email again
Fix #6: Remove and Re-add Account
If nothing else works, start fresh:
- Remove your email account from the app
- Restart your device
- Add the account again with correct settings
- Make sure to use the exact settings listed above
Fix #7: Try a Different Email App
Sometimes the issue is with the email app itself:
- iPhone: Try the built-in Mail app
- Android: Try Gmail app or Samsung Email
- Computer: Try Thunderbird or Outlook
Fix #8: Check for App Updates
- Go to your app store (App Store or Google Play)
- Check if your email app has updates
- Update the app
- Try connecting again
💡 Pro Tip: Try signing in to webmail at https://system.atriomail.com/webmail with the same email address and password. If webmail works, your account is fine and the problem is in your email app's settings.
Advanced: Check Port Availability
Some networks block email ports. Try these alternatives:
- SMTP port 587 (recommended) or try 465 with SSL/TLS
- IMAP port 993: if it is blocked, try a different network (for example mobile data instead of office Wi-Fi)
Still Can't Connect?
If you've tried everything:
- Contact support through the live chat in the control panel
- Tell us:
- What device you're using (iPhone, Android, Windows, Mac)
- What email app you're using
- The exact error message you see
- What you've already tried
- Support is available during business hours
✅ Quick Checklist:
- ☐ Internet connection working
- ☐ Server: mail.atriomail.com
- ☐ Ports: 993 (IMAP), 587 (SMTP)
- ☐ Username: Full email address
- ☐ Password: Correct and no extra spaces
- ☐ Security: SSL/TLS (IMAP) and STARTTLS (SMTP on 587)