Sign your Plesk servers' outbound mail through MailGuard and deliver it from reputation-managed IP pools; strip spam and viruses from inbound mail. Compatible with Windows and Linux Plesk installations.
Plesk servers usually send mail from a single public IP. If SPF/DKIM/DMARC is missing or the IP reputation is low, the mail you send is marked as spam or rejected by Gmail, Outlook, and Yandex. MailGuard takes over Plesk's outbound traffic as a smarthost; it signs DKIM, runs content inspection, and delivers from clean IP pools.
For detailed, copy-paste configuration, see the docs. To test your domain, use the SPF/DKIM/DMARC tool and the mail test.
| MailGuard | Directly from the server | Doing nothing | |
|---|---|---|---|
| DKIM signature on outbound mail | Automatic (MailGuard signs) | You have to set it up | None |
| IP reputation management | Fixed, monitored pool per domain | Single IP — everyone at the same risk | None |
| Inbound spam / virus filter | Yes (MX routing) | Depends on the server | None |
| Blacklisting risk | Minimal (isolated pool) | High | High |
| Delivery visibility / logs | Real-time dashboard + API | Limited | None |
The setup documentation was very clear. We activated it on the Plesk side without running into any issues.
We've been using it on our Plesk servers for a long time without any issues. We're happy with its performance.
The Plesk integration was completed smoothly. The support team was also very attentive.
We can securely manage multiple mail servers from a single place.
Our mail infrastructure has become more reliable. We found it especially effective against spam.
We easily integrated MailGuard into our existing infrastructure. We experienced no downtime.
Let's talk through your current setup, your volume, and your delivery issues, and put together a migration plan tailored to you.
Get a QuotePlesk is a hosting control panel widely used on both Windows and Linux. Although it's strong on the email side, deliverability depends largely on the server's IP reputation and the accuracy of your DNS records. On a Plesk server that sends from a single IP, one account's unsolicited mail can drag down the whole server's reputation.
Using an SMTP relay / gateway removes this risk. MailGuard takes over Plesk's outbound mail; it signs every message with DKIM, runs it through spam scoring and rate limiting, and then delivers it from a reputation-monitored exit IP. This way, one customer's behavior doesn't affect the others, the delivery rate rises, and the blacklisting risk is minimized.
Setup is completed in a few minutes from Plesk's Mail Server Settings interface; your existing mailboxes and accounts are left untouched. On the inbound side, spam/virus filtering can also be added with an MX change — inbound and outbound security from a single platform.
