Welcome to postmaster.mail.de
Here you can find information about the mail.de mail system.
Abuse contact:
If you have any question or cannot find the information you are looking for, please mail us: postmaster@mail.de
If you see any abuse from our systems, please also contact us: abuse@mail.de
IP Addresses of our outbound mail servers:
| 62.201.172.24 | 2001:868:100:600::216 | shout01.mail.de |
| 62.201.172.25 | 2001:868:100:600::217 | shout02.mail.de |
| 62.201.172.26 | 2001:868:100:600::218 | shout03.mail.de |
| 62.201.172.27 | 2001:868:100:600::219 | shout04.mail.de |
| 62.201.172.57 | 2001:868:100:600::f153 | shout11.mail.de |
| 62.201.172.58 | 2001:868:100:600::f154 | shout12.mail.de |
Email sending policy:
If you want to send emails to us, your outbound mailserver and your emails have to meet the following conditions:
- Static IP address: Your outbound mailserver must have a static IP address
- rDNS: Your outbound mailserver must have a PTR record as reverse DNS name. This reverse DNS name must be an individual host name, which points back to the IP address of the outbound mailserver.
- DNSBL: Check that the IP address of your outbound mailserver is not listed on a public DNS blocklist, like the ones at the bottom of this page. You might check this at MxToolbox for example.
- HELO: Your outbound mailserver must send a valid HELO/EHLO, it must be the fully qualified domain name (FQDN) of your mailserver (e.g. mail.domain.com)
- MX/A record: The domain which is used in your Envelope From must exist, and must either have a MX or A DNS record, so it can receive bounce mails if needed.
- Headers: Your emails must comply with RFCs 5321 and 5322. For example:
- The following headers must exist exactly once (and must be valid): Date, From, Message-ID
- The following headers should not exist more than once: Subject, To, Cc, Reply-To, Sender, In-Reply-To and References
Rate limiting:
If you get temporary rejects from our MX mailservers with the SMTP error message "450 Traffic is being throttled", then you are sending too fast. Either slow down your sending rate, or contact us, then we can talk about increasing your rate limit.
DKIM signature:
We add a DKIM signature to every mail that leaves our system. Currently we use the following DKIM selector:Usage of DNSBLs (DNS Blocklists):
As one of our counter measures we use well known, public and private blocklists. If your outbound IP address is listed on these
blocklists, we might block your mails with the following error message:
We currently use the following 6 DNSBLs:
- all.spamrats.com - Thanks for your support! Go to Website
- invaluement - Get access here!
- GBUdb Truncate - Thanks for your support! Go to Website
- NixSpam ix.dnsbl.manitu.net - Thanks for your support! Go to Website
- Passive Spam Block List psbl.org - Thanks for your support! Go to Website
- our internal mail.de blocklist