Seems like a lot of hosting providers are blocking port 25 of late (something I discovered recently when VPS shopping). Digital Ocean started blocking more ports just as I was about to set up a new host - so I ended up at Bluehost (can't say much for their support though - service is fine, once you get it properly configured, but their configurator is badly broken, and you've got to deal with support via chat to get things cleaned up - not even a ticketing system... sigh).
Sent from Samsung Galaxy smartphone. Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ From: mailop <[email protected]> on behalf of David Prall via mailop <[email protected]> Sent: Sunday, May 3, 2026 12:40:05 PM To: [email protected] <[email protected]> Subject: [mailop] Delivery to Hetzner hosted domain f41a1.com I run a mailing list and have a user @f41a1.com that informed me that he isn't receiving list mail. Looking at both of my mail servers for dcptech.com I have a number of emails backed up to him. Both ironport.dcptech.com 199.212.124.13 and ironport-c300vb.dcptech.com 199.212.124.14 can't reach mail.f41a1.com 65.108.229.46 on TCP/25. Can ping the server, but traceroute, traceroute tcp 25, and telnet 25 all fail. Traceroute is dropped at ex9k1.dc1.hel1.hetzner.com (213.133.119.3) 125.332 ms 125.218 ms 125.419 ms I've tried testing from my 2 mail servers and 2 other systems within 199.212.124.0/24 with the same results. Don't see my servers on any blocklists via mxtoolbox.com, multirbl.valli.org and dnsbl.info. David -- https://dprall.net _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
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