Fucking #Comcast is (again) bouncing emails from my family mail server with no explanation of why or what to do about it.
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Fucking #Comcast is (again) bouncing emails from my family mail server with no explanation of why or what to do about it. Just "554 server not available".
There is no legitimate reason to bounce emails from my server. I do _everything_ correctly (incl. #DKIM and p=reject #DMARC) and my server has been in continuous operation for over a decade.
Comcast is the worst, but, they're not the only one pulling this crap.
Yet another domain I have to route through #MailGun. *sigh*
#smtp #sysadmin -
Brett Sheffield (he/him)replied to Jonathan Kamens last edited by
@jik Is this kamens.us? I'm guessing they don't like the linode IP block your mail server is on. It's quite likely the entire /16 has been given a poor reputation score because of other users of that block.
It *shouldn't* work that way, but some mail admins are complete muppets and do this. comcast don't even run IPv6 on their mail servers, so the muppet theme tune is playing pretty loudly...
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Jonathan Kamensreplied to Brett Sheffield (he/him) last edited by
@dentangle I am well aware that's what's going on. But there was a time when Comcast's bounces gave you instructions for how to contact their postmasters to get stuff like this fixed (they could whitelist your IP). But now they've decided to just bounce messages without any explanation or recourse.
If they accepted IPv6 connections, that would also fix this, since my server has a dedicated IPv6 address block. -
Tangentially - Hotmail was sending all email from Google Groups to spam last time I looked. Which I take as a general sign of hopelessness.
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Brett Sheffield (he/him)replied to John Gordon last edited by