Point your Exchange Send Connector to MailGuard so your outbound mail is DKIM-signed and delivered from reputation-managed IPs, while your inbound mail is cleaned of spam and viruses. Compatible with on-premises Exchange deployments.
On-premises Exchange servers usually send from a single static IP. If that IP's PTR/rDNS record, SPF alignment or reputation is insufficient, major providers delay the messages, mark them as spam or reject them. MailGuard receives Exchange's outbound mail as a smart host and takes over authentication, signing and reputation management.
For detailed, copy-paste configuration, see the docs. To test your domain, use the SPF/DKIM/DMARC tool and mail test.
| MailGuard | Directly from the server | Doing nothing | |
|---|---|---|---|
| DKIM signature on outbound mail | Automatic (MailGuard signs) | You have to set it up yourself | None |
| IP reputation management | Fixed, monitored pool per domain | Single IP — everyone shares the same risk | None |
| Inbound spam / virus filter | Yes (via MX routing) | Depends on the server | None |
| Risk of blacklisting | Minimal (isolated pool) | High | High |
| Delivery visibility / logs | Real-time dashboard + API | Limited | None |
SMTP routing works without a hitch. Our corporate email traffic has become much more stable.
Our users no longer miss important emails. A service that inspires confidence.
Being able to manage inbound and outbound email security from a single platform has been a huge convenience.
We've been using it for a long time. We're especially happy with the stability and spam protection it provides for our corporate email traffic.
The technical support team helped us quickly during integration. We went live in no time.
A significant portion of malicious email traffic is blocked before it ever reaches users.
Let's talk through your current setup, your volume and your delivery issues, and put together a migration plan tailored to you.
Get a QuoteMicrosoft Exchange is the backbone of corporate email. However, how an on-premises Exchange server delivers to the outside world depends on many factors such as IP reputation, PTR/rDNS alignment, SPF alignment and TLS configuration. If any of these settings is missing, corporate mail is delayed or lands in spam.
The smart host model offloads this complexity to MailGuard. Exchange forwards outbound mail to MailGuard rather than directly to the internet; MailGuard handles authentication (DKIM signing), content/virus inspection and reputation management, then delivers it to the destination with the correct PTR and HELO. Your organization no longer has to manage the reputation of its single IP.
On the inbound side, pointing the MX record to MailGuard filters out spam, phishing and viruses before they ever reach the Exchange server. The result: more stable corporate email traffic, higher deliverability and inbound/outbound security managed from a single platform.
