Intermittent Email Failure - Sending to Customers fail due to MC and SPF checks to domains intermittently.

[Joshua T M]

Please see the following logs, this began happening in the last 20 minutes and seems to be progressing -

Any assistance you can provide would be greatly appreciated or any understanding of pre-existing issues the mail service may be facing?

 

Subject: IN - Upgrade from v10.4 to v11 - what are requirements

 

Date	Log Entry
2023-10-04 09:33:22	Originating domain: strumis.com
2023-10-04 09:33:22	Originating address: support@strumis.com
2023-10-04 09:33:22	Performing SPF check on domain. OrigDom=hornbill.com, OrgPre=_spf, ReqInc=true
2023-10-04 09:33:22	Delivery using DNS/direct message routing
2023-10-04 09:33:22	Target address: ----------
2023-10-04 09:33:22	Target domain (DNS MX Lookup): ----------
2023-10-04 09:33:22	Permanent failure delivering message to target recipient. Status set to 'failed'
2023-10-04 09:33:22	No MX records returned for domain: ---------- , mail delivery not possible

 

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Subject: Re: RE: Error Message:

Date	Log Entry
2023-10-04 09:18:43	Originating domain: strumis.com
2023-10-04 09:18:43	Originating address: support@strumis.com
2023-10-04 09:18:43	Performing SPF check on domain. OrigDom=hornbill.com, OrgPre=_spf, ReqInc=true
2023-10-04 09:18:43	Permanent failure delivering message to target recipient. Status set to 'failed'
2023-10-04 09:18:43	Sender Policy Framework (SPF) check failed for originator domain: strumis.com SPF CHECK FAILED: Unable to locate any SPF record for domain: strumis.com

[aykut.boyraz]

Hi @Joshua T M, 

We've been having the same issue all morning. Most emails have been failing and we've been manually re-processing them.

We've raised it with Hornbill Support who have just advised us that Cloudflare were reporting intermittent DNS resolution issues this morning which is now resolved.

If your emails are now working again, it was probably due to the issue with Cloudflare.

Regards,
Aykut

[Joshua T M]

Thanks @aykut.boyraz,

Typical Cloudflare problems, eh?

Thanks for corroborating. We've been manually re-processing just the same. We'll sit on it and wait it out.

Kind Regards,

Josh M

[Keith Stevenson]

All,
There was a cloudflare DNS issue this morning for a 2 hour window.  You may have seen intermittent mail delivery failures, however the emails should have been resent automatically 

Here is a link to the cloudflare status page. 

https://www.cloudflarestatus.com/#past-incidents

Kind Regards

Hornbill Cloud Team 

[Joshua T M]

Thanks Keith!