Postmaster

Welcome to postmaster.arrowtec-media.de

Here you can find information about the arrowtec-media.de mail system.

Abuse contact:

If you have any question or cannot find the information you are looking for, please mail us: postmaster@arrowtec-media.de.de
or contact by phone: +49 (0) 7621 5105519
If you see any abuse from our systems, please also contact us: abuse@arrowtec-media.de

IP Addresses of our outbound mail servers:

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

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: