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Message 21 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

@Kev_B I can see a definite improvement with the majority of emails now being delivered. We do appear to have a single IP address that is still getting the same errors, but the numbers in the queue are relatively small and hopefully these will go through in time as well.

Thanks for all the support @Tom_f and others.

Cheers

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Message 22 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

Thanks for letting us know @chrisbint we appreciate the update - if the problem continues please keep us posted.

 

@afindlay we'll continue to chase this up with the relevant team when they're available again tomorrow, apologies for the delay.

 

Tom

 

 

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Message 23 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

Last week's messages timed out and bounced back to the senders, but there are now three more in the queue and getting the same error.

Andrew

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Message 24 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

Any news on this @Tom_F ? The queue is still building up.

Thanks

Andrew

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Message 25 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

@ModTeam - Can you give someone a nudge please?

Tim

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Message 26 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

We're having the same problem here. Only started happening a week or two ago.

We use Office 365 and the e-mails aren't being outright rejected, they just get deferred / queued for 48 hours and then rejected.

Reason: [{LED=421-4.2.0 MXIN611 421-4.2.0 From header check failed 421 4.2.0 ;id=DQExijwvbC3I9DQEyiwuIS;sid=DQExijwvbC3I9;mta=mx5.tb;d=20190926;t=113912[CET];ipsrc=40.107.10.128;};{MSG=};{FQDN=mx.tb.ukmail.iss.as9143.net};{IP=212.54.56.11};{LRT=9/26/2019 9:39:10 AM}]. OutboundProxyTargetIP: 212.54.56.11. OutboundProxyTargetHostName: mx.tb.ukmail.iss.as9143.net

Domain is johnston.racing

Would it be possible for this to be investigated please? The domain has valid SPF and valid DKIM, there's absolutely no reason for this to be rejected.

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Message 27 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

@afindlay @vexation 

I'm checking with our email team for both of your domains. I'll let you know when I hear back.

@chrisbint 

Did the problems clear up on that single IP, or are they ongoing? If you do still have a problem, could you PM me with the IP address please so we can check this further?

Kev

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Message 28 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

Kev,

Yes, it appears that all IPs are now working as expected. 

Many thanks

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Message 29 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

Emails from the domain Rowell.xyz are also being rejected/delayed

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Message 30 of 47
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Re: Emails are being blocked with MXIN611 From header check failed

This is still a problem, and some other people are reporting it too:

https://community.virginmedia.com/t5/Email/Re-Emails-are-being-blocked-with-MXIN611-From-header-chec...

https://community.virginmedia.com/t5/Email/Re-Emails-are-being-blocked-with-MXIN611-From-header-chec...

Here is a sample log entry from today:

2019-10-02 06:38:21 1iEzeQ-0007lP-4N SMTP error from remote mail server after end of data: 421-4.2.0 MXIN611\n421-4.2.0 From header check failed\n421 4.2.0 ;id=FXLAieIbrNXtvFXLAiIsuI;sid=FXLAieIbrNXtv;mta=mx7.mnd;d=20191002;t=073821[CET];ipsrc=194.106.223.211;

The From header looks like this:

From: redacted <redacted@maidenhead.cc>

The Sender header is a mailing-list expander:

Sender: "redacted-members" <redacted-members-bounces@maidenhead.cc>

It still looks as if you have added an over-picky anti-spam check somewhere.

Andrew