Send SmarterMail's outbound mail through MailGuard so it's delivered DKIM-signed from reputation-managed IP pools. Your inbound mail is cleaned of spam and viruses too.
SmarterMail is a powerful Windows mail server; however, delivery still depends on the server's egress IP reputation. Heavy sending from a single IP, missing SPF/DKIM or a blacklist entry will lower deliverability. When you define MailGuard as your outbound gateway, outbound mail is signed, inspected and delivered from clean pools.
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 |
Its compatibility with SmarterMail was important to us. We had no problems after installation.
The SmarterMail integration took far less time than we expected. The documentation was sufficient.
The malicious-content filtering on inbound mail works quite well.
The spam filters are effective, and the false-positive rate is quite low.
The unnecessary spam load in inboxes has dropped significantly. Productivity has increased.
Inbound spam is largely filtered out. Our teams spend far less time dealing with junk email.
Let's talk through your current setup, your volume and your delivery issues, and put together a migration plan tailored to you.
Get a QuoteSmarterMail is a mail server favored especially in Windows-based hosting environments. Although its email sending/receiving capabilities are strong, delivery to external providers depends on the server's IP reputation and DNS records. On a SmarterMail server that sends in high volume, a single problematic account can affect the reputation of the entire egress IP.
When you define MailGuard as your outbound gateway, SmarterMail forwards outbound mail to MailGuard. MailGuard signs every message with DKIM, runs content and rate checks, then delivers it from a reputation-monitored IP. This raises the delivery rate and lowers the risk of blacklisting.
On the inbound side, MX routing adds spam and virus filtering, so user inboxes are cleared of junk and malicious mail. This way you manage inbound and outbound email security from a single point without changing your SmarterMail infrastructure.
