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What's needed in SMTP->Relaying->Upstream-hosts/networks

Hi,

I'm just checking the SMTP configuration of my UTM Version 9.3 and don't know what to enter in Relaying->Upstream-host/Networks.
I use an internal Exchange Server and receive mails using an MX at my ISP:

- Hostname mydomain.de, Type MX, Priority 20, Destination extern.mydomain.de
- Hostname mydomain.de, Type MX, Priority 40, Destination myisp

What do I have to enter in Upstream-hosts/Networks that spam checking works correct. Which URL or IP?
Should I check "Allow upstream/relay hosts only"?

Kind regards
Peter

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0 QMW_Brad over 9 years ago

You add the static IP address from your ISP where you're hosting your MX records. If this is the only way you are receiving emails you can select Allow upstream/relay hosts only. I've never bothered though, someone smarter than me can probably tell you if it's a good idea or not.
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0 BAlfson over 9 years ago

I'm not sure I understand your notation concerning your MX records. If none of the MX records is an FQDN that points at the UTM, then you should check the box. If the MX with priority 40 is an FQDN that points to backup MTA at your ISP, then add a DNS Host for that FQDN to 'Upstream hosts...'.

Cheers - Bob

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