Frequently asked questions about Synology MailPlus
Last updated:Oct 16, 2023
Frequently asked questions about Synology MailPlus
Details
General issues
- Index of MailPlus security logs
- What can I do when the CPU utilization of my Synology NAS is high?
- How do I customize the alias, port, or domain for specific Synology services?
- What websites does my Synology NAS connect to when running services or updating software?
- What services/packages are affected when I disable the default "admin" account?
- Why do I keep receiving the message "User [admin] from […] failed to log in via [MailPlus-Server] due to authorization failure"?
- How do I use multiple domains in MailPlus Server?
Installation issues
- How do I find a suitable Synology NAS for Synology MailPlus?
- How do I best deploy Synology MailPlus and select a suitable Synology NAS?
- How do I set up Synology MailPlus?
- How do I create a high-availability cluster for Synology MailPlus Server?
- How do I check if DNS records are properly configured for a mail server?
Delivery issues
- How do I configure DNS records for a mail server?
- I can't find my email. What can I do?
- My emails go undelivered. What can I do?
- My sent emails are marked as spam. What can I do?
- Synology MailPlus Server is sending spam and gets blocklisted. What can I do?
- What types of addresses are identified by MailPlus spam filters?
- I cannot attach large files to emails on Synology MailPlus. What can I do?
- My filters do not work with emails fetched via POP3. What can I do?
- How do I receive external emails via Synology MailPlus?
- What can I do if MailPlus cannot receive external emails?
- I can send but not receive emails. What can I do?
Migration issues
- Migrate your organization's data from Exchange Server to Synology MailPlus, Contacts, and Calendar
- Migrate your organization's data from Google Workspace to Synology MailPlus, Contacts, and Calendar
- How do I import configurations and aliases from Microsoft Exchange Server to Synology MailPlus Server?
- How do I get a service key from Google Workspace for migration?
- How do I migrate from Synology Mail Server to MailPlus Server?
- What do I need to do after migrating via Migration Assistant?
License issues
- How do I migrate MailPlus licenses to another Synology NAS?
- How many free MailPlus licenses do I have in a high-availability cluster?
- How do I replace a Synology NAS in a MailPlus high-availability cluster?
Client issues
- My users do not have permission to use Synology MailPlus. What can I do?
- My MailPlus client users cannot receive their emails. What can I do?
- What can I do if Outlook cannot establish a connection to MailPlus Server?
- How do I check my Synology MailPlus on Mozilla Thunderbird and Microsoft Outlook?
- How do I set up my Synology MailPlus account on Microsoft Outlook? (for macOS)
- How do I assign email addresses in Synology MailPlus Server?
For overall information about MailPlus, please refer to the Synology MailPlus Server Administrator's Guide.