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Netgrimoire/mailcow-mxroute.md
Administrator 2df2c47f28 docs: create mailcow-mxroute
2026-02-15 01:42:24 +00:00

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title description published date tags editor dateCreated
Forwarding Mailcow through MXRoute Maintaining reputation true 2026-02-15T01:42:12.478Z markdown 2026-02-15T01:42:12.478Z

MXroute as Forwarder for Mailcow

Overview

Configuration guide for setting up MXroute as an email forwarder for Mailcow-hosted domains.

Mailcow Configuration

1. Create Domain

  1. Navigate to Mailcow admin panel → Domains
  2. Add new domain
  3. Select the previously created sender-dependent transport
  4. Record the generated DKIM key

2. Add DKIM Key

  • Configure DKIM for both Mailcow and MXroute
  • Use different selectors for each (e.g., default for Mailcow, mxroute for MXroute)

DNS Configuration

Required DNS Records

A Record

mail.yourdomain.com → [Your Mailcow Server IP]

MX Record

yourdomain.com → hermes.netgrimoire.com (Priority: 10)

CNAME Records

imap.yourdomain.com → mail.yourdomain.com
smtp.yourdomain.com → mail.yourdomain.com
webmail.yourdomain.com → mail.yourdomain.com
autodiscover.yourdomain.com → mail.yourdomain.com
autoconfig.yourdomain.com → mail.yourdomain.com

TXT Records

SPF Record

v=spf1 ip4:192.168.5.16 ip4:24.249.193.115 include:mxroute.com -all

DMARC Record (_dmarc.yourdomain.com)

v=DMARC1; p=reject; rua=mailto:admin@netgrimoire.com

DKIM Record (default._domainkey.yourdomain.com)

v=DKIM1; t=s; p=[YOUR_PUBLIC_KEY]

Example: gnarlypandaproductions.com

Record Type Name Value
MX @ hermes.netgrimoire.com (Priority: 10)
A mail [Mailcow Server IP]
CNAME webmail mail.gnarlypandaproductions.com
CNAME imap mail.gnarlypandaproductions.com
CNAME smtp mail.gnarlypandaproductions.com
CNAME roundcube roundcube.netgrimoire.com
TXT @ v=spf1 ip4:192.168.4.11 ip4:24.249.193.114 include:mxroute.com -all
TXT _dmarc v=DMARC1; p=reject; rua=mailto:admin@gnarlypandaproductions.com
TXT default._domainkey v=DKIM1; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3D3vyPoBHB4eMSMq8HygVWHzYbketRX4yjk9wV4bdaar0/c89dK230FMOW6zVXEsY1sXKFk1kBxerHVw0wY8qnQyooHgINEQcEXrtB/x93Sl/cqBQXk+PHOIOymQwgni8WCUhCSnvunxXK8qX5f9J56qzd0/wpY2WSEHho+XrnQjc+c7HMvkcC3+nKJe59ZNgvQW/Y9B/L6zFDjAp+QOUYp9wwX4L+j1T4fQSygYxAJZ0aIoR8FsbOuXc38pht99HyUnYwH08HoK7xv3DL2BrVo3KVZ7xMe2S4YMxd1HkJz2evbV/ziNsJcKW/le3fFS7mza09yJXDLDcLOKLXbYUQIDAQAB

Port Configuration

IMAP (SSL/TLS)

  • Port: 993

SMTP (SSL/TLS)

  • Port: 465

Relay Accounts

Configuration for sender-dependent transports:

Domain Username Password
pncharris.com relay@pncharris.com H@rv3yD)G123
pncharris.com forwarder@pncharris.com (see password history)
pncharris.com passer@pncharris.com bBJtPhrGkHvvhxhukkae
wasted-bandwidth.net relay@wasted-bandwidth.net dZ4yLYznVvgSJtqWZJFA
netgrimoire.com relay@netgrimoire.com TVGCnJp9SxRbWU8EhkMw
florosafd.org relay@florosafd.org 2Fe8XMyaeh6Z5dvdHYdq
gnarlypandaproductions.com relay@gnarlypandaproductions.com vG5ZsUQhRWD2UyzLPsqA

Password History (passer@pncharris.com)

Latest passwords (most recent last):

  • !5!,_*zDyLEhhR4
  • sh7dXWnTPqbkDGsTcwtn
  • MY3V8p69b2HYksygxhXX
  • RS6U2GU6rcYe3THKKgYx
  • yzqNysrd73yzWptVEZ5H (current)

Additional Credentials

  • kylr pncharris: -,68,incTeR
  • G4@rlyf1ng3r

Troubleshooting

Common Issues

  1. Email not sending through MXroute

    • Verify SPF record includes MXroute IPs
    • Check sender-dependent transport is selected in Mailcow
    • Confirm relay account credentials are correct

  2. DKIM verification failing

    • Ensure both Mailcow and MXroute DKIM records are published
    • Verify different selectors are used
    • Check for DNS propagation (24-48 hours)

  3. DMARC failures

    • Confirm SPF and DKIM are properly aligned
    • Review DMARC reports sent to rua address

References