MxGuard Smarthost

Authenticated outbound relay (smarthost) for your own systems. Reliable, filtered sending from anywhere.

General help

Do I need the smarthost on Microsoft 365 or Google Workspace? 576 views seen 2mo ago maria_n 31 May 2026

Configuring Exim to use MxGuard as a smarthost 419 views seen 1mo ago sam_r 15 May 2026

Configuring Postfix to relay through MxGuard 51 views seen 6mo ago daveA67 12 Nov 2025

Setting up MxGuard Smarthost in three steps 446 views seen 4mo ago raj230 11 Nov 2025

SMTP authentication vs IP allowlist: which should I choose? 950 views seen 3mo ago nick_v 09 Nov 2025

Smarthost rate limits, who needs it, and cancelling 65 views seen 5mo ago dan.rowntree 02 Nov 2025

Rotating your smarthost credentials safely 6,204 views seen 1mo ago kate162 30 Oct 2025

Troubleshooting outbound mail after enabling the smarthost 1,538 views seen 5mo ago scottM52 22 Aug 2025

Adding the _spf.mxguard.uk include without breaking SPF 1,106 views seen 6mo ago kate.rowntree 03 Aug 2025