If you do not control the IP space or the MTA, pass the feedback to the postmaster of the MTA - it is unlikely you will be able to do much as an end user.
On Sunday, 14/07/2024 at 19:17 Jeff Pang via mailop wrote: I'm aware that gmx.net primarily serves Germany, Austria, and Switzerland, while gmx.com is intended for global users. However, I've encountered an unusual issue with both domains. When sending emails from certain regions (like my current location in Singapore), regardless of whether I use gmx.net or gmx.com, the messages are routed through a separate gateway. Unfortunately, this gateway's IP address is heavily compromised and listed on the Spamhaus blacklist. Interestingly, this problem doesn't occur when using GMX services from European locations. In those cases, outgoing emails are sent through normal, clean gateway IPs. I've attached a bounce message from one of my emails below, which was rejected due to the Spamhaus listing. This raises a question: Isn't GMX's approach to spam prevention for non-European regions overly simplistic and potentially harmful to legitimate users? SMTP error from remote server for RCPT TO command, host: mx.sample.com (20.xx.xx.xx) reason: 554 5.7.1 Service unavailable; Client host [82.165.159.13] blocked using z en.spamhaus.org; Listed by SBL, see https://check.spamhaus.org/sbl/que ry/SBL594401 Does anyone else think that GMX's anti-spam measures for outgoing emails from outside Europe are a bit too blunt and potentially counterproductive? Thank you. -- Jeff Pang jeffp...@aol.com _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
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