---
title: Mailbaby for Zimbra
description: "MailBaby for Zimbra 8.8.x Configuration To relay outgoing mail through MailBaby using Zimbra 8.8.x, follow these steps: **1. Update Your SPF Record** For each registered domain, update the SPF record to authorize your Zimbra server and MailBaby: `v=spf1 ip4: include:spf-c.mailbaby.net…"
url: "https://www.mail.baby/tips/mailbaby-for-zimbra/"
updated: "2025-09-18"
category: Tutorials
---

# Mailbaby for Zimbra

MailBaby for Zimbra 8.8.x Configuration

To relay outgoing mail through MailBaby using Zimbra 8.8.x, follow these steps:

**1. Update Your SPF Record**

For each registered domain, update the SPF record to authorize your Zimbra server and MailBaby:

`v=spf1 ip4: include:spf-c.mailbaby.net -all`

Replace  with the public IP address of your mail server for origin ip verification.

**2. Configure Relay Authentication**

Log in as the Zimbra user usually zumbra

Create the relay password file with your MailBaby credentials:

`echo "relay.mailbaby.net user:password" > /opt/zimbra/conf/relay_password`

Replace user:password with your MailBaby relay credentials.

**3. Build the Password Map**

`postmap /opt/zimbra/conf/relay_password`

Check that the map was created successfully:

`postmap -q relay.mailbaby.net /opt/zimbra/conf/relay_password`

If correct, it will return the configured username.

**4. Apply Zimbra MTA Settings**

Run the following commands, replacing  with your Zimbra mail server’s fully qualified domain name:

`zmprov ms  zimbraMtaSmtpSaslPasswordMaps lmdb:/opt/zimbra/conf/relay_password
zmprov ms  zimbraMtaSmtpSaslAuthEnable yes
zmprov ms  zimbraMtaSmtpCnameOverridesServername no
zmprov ms  zimbraMtaSmtpSaslSecurityOptions noanonymous`

**5. Postfix Configuration**

Update Postfix to use the relay password map:

`postconf -e smtp_sasl_password_maps=hash:/opt/zimbra/conf/relay_password`

Set MailBaby as the relay host:

`zmprov ms  zimbraMtaRelayHost relay.mailbaby.net:587`

**6. Restart Zimbra MTA**

Finally, restart the MTA service to apply changes:

`zmmtactl restart`

✅ At this point, Zimbra should relay outgoing messages through MailBaby. Be sure to test sending an email and check your mail logs for any authentication or relay errors. Please review [mailbaby best practices](https://www.mail.baby/tips/best-practices-for-email-at-mailbaby/).