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iOS · 1&1 Mail & Media GmbH

GMX - Mail, Cloud & News

Developer URL
https://www.gmx.net/
app-ads.txt
https://www.gmx.net/app-ads.txt · 200
Checked
Oct 7, 2026
A
96/100

86 lines · 46 verified against sellers.json

Findings

Each finding lists the exact lines involved. These are mechanical checks of public files, not fraud verdicts.

warning

Seller IDs not listed in the ad system's sellers.json

1 −3 pts

The ad system's current sellers.json doesn't list these accounts, so buyers that validate the chain can't match them. Usually leftovers from closed accounts or old partners.

How to fixAsk each partner whether the account is still active and request their current lines; remove lines for closed accounts.
Evidence (1)
line 129    rubiconproject.com, 20086, RESELLER, 0bfd66d529a55807
             → sellers_json=https://rubiconproject.com/sellers.json
info

DIRECT accounts registered to another domain

1 −1 pts

Allowed when the domain belongs to the same company; add OWNERDOMAIN to make that explicit. Otherwise these accounts may belong to someone else.

How to fixIf the account is yours under another domain, declare it with OWNERDOMAIN=<that domain>; otherwise mark it RESELLER.
Evidence (1)
line 28     google.com, pub-8493805572411343, DIRECT, f08c47fec0942fa0 #AdManager
             → seller_domain=web.de  seller_name=United Internet Media GmbH

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