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# Which IP-addresses do Laposta's mail servers use?

> Overview of the IP ranges and domain names that Laposta uses to send newsletters.

Your newsletter displays your sender address as the From address. This makes it appear to your subscribers as if the newsletter was sent directly by you. In fact, your newsletters are sent via Laposta's servers, which are situated in multiple locations.

System administrators often want to know which domain names and IP addresses Laposta uses for this. These are the IP ranges from which emails can be sent:

```text
45.152.251.0/24
91.247.184.0/24
161.51.101.0/24
188.241.247.0/24
193.160.154.0/24
```

All emails from Laposta have a Laposta domain name as the invisible sender (Return-Path), for example `mail.eprov.eu`. If you want to use your own domain name there, you can change this under Settings → Authentication by [authenticating your domain](/stap-voor-stap-je-domein-authenticeren).

## Related articles

#### [When should you choose a dedicated IP-address for delivery?](/kan-ik-mijn-nieuwsbrief-vanaf-een-eigen-ip-adres-versturen)

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#### [How does newsletter delivery work at Laposta?](/hoe-verzorgt-laposta-de-verzending-van-mijn-nieuwsbrieven)

What Laposta does to deliver your newsletter reliably and how fast it goes.

#### [What rules must a sender address meet?](/wat-is-een-afzendadres)

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#### [Editing the hostname of your account](/wat-is-een-hostname)

What the hostname does in the links of your newsletters and how to edit it yourself.