SMTP Relay Server
If you send emails from your in-house email server and the recipient system does not accept emails from dynamic IPs, you need an SMTP relay server. With the HeartBeat plans, such a server is available to you.
Easy to Use
Usage is very simple – no SMTP authentication required. Your IP address, which is known to us through account updates, is automatically authorized for sending.
| Outgoing mail server: |
da.smtp-relay.de |
| Username/Password: |
no configuration required |
| Ports: |
Port 25 and Port 587 – both with TLS encryption |
| SPF: |
Set the following DNS TXT record for the sender domain:
v=spf1 include:_spf.da.smtp-relay.de -all |
Sending Limits by Plan
| Plan |
Emails/Hour |
Emails/Day |
| HeartBeat A |
20 |
200 |
| HeartBeat B |
75 |
500 |
| HeartBeat C |
200 |
1,000 |
Terms of Use
The SMTP relay server is available to you without restrictions for normal email correspondence in private and commercial use.
 |
Sending promotional emails is only permitted to recipients with verifiable consent (double opt-in) |
|
Sending spam is strictly prohibited |
|
Repeated emails to non-existent recipients will result in temporary IP blocking |
|
Any misuse is traceable through logs |
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