AutoDiscover not working / "Cannot find server":
- Verify the autodiscover CNAME record exists in your DNS:
autodiscover.yourdomain.com→mail.vumacloud.com. Use mxtoolbox.com to check. - DNS changes can take up to 48 hours (much faster on Cloudflare). Be patient after making changes.
- Ensure you selected Exchange as the account type, not IMAP.
"Cannot connect to server" error:
- Verify your password is correct. Reset it from your admin panel if needed.
- Ensure your firewall or corporate network is not blocking ActiveSync traffic (port 443).
Not receiving emails:
- Verify your MX records are pointing to mail.vumacloud.com.
- Check your spam/junk folder in webmail at mail.vumacloud.com.
- Ensure your mailbox is not full (50GB limit).
Emails going to recipients' spam folder:
- Ensure SPF, DKIM, and DMARC records are set up correctly (see Article 3.2).
- Avoid using spam trigger words in subject lines.
- Don't send bulk unsolicited emails from your mailbox. Use VumaAPI for marketing emails.
Calendar or contacts not syncing:
- Ensure you are connected via Exchange/ActiveSync, not IMAP. IMAP only syncs email — it does not sync calendars, contacts, or tasks.
- On mobile, verify that Calendars and Contacts are toggled on for the account in your device settings.
Outlook keeps asking for password:
- Remove and re-add the account in Outlook as an Exchange account.
- On Windows, clear cached credentials: Control Panel → Credential Manager → remove any entries for mail.vumacloud.com.
