Probably not related, but we had a few of these today, first one at 8:16 am (Central), last one at 2:30 pm:
ubad=-1, Site (redacted.domain/207.46.163.170) said: 451 4.3.2 Temporary server error. Please try again later ATTR2 We saw these IPs involved: 207.46.163.138 207.46.163.170 207.46.163.215 207.46.163.247 2a01:111:f400:7c09::11 Frank From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Michael Wise Sent: Monday, April 11, 2016 3:43 PM To: mailop <mailop@mailop.org> Subject: Re: [mailop] Hotmail connection errors Sorry for the delay… I have been informed that: “ The change has been fully deployed. “ Our expectation is they should not see 5.4.0 anymore. “ However, they might see a few ‘5.5.4 Transaction Failed’ error … How is it going now? 5.4.0 and 5.5.4 … are we seeing a lot less / none? Otherwise, Happy Monday! (or something) :) Aloha, Michael. -- Michael J Wise | Microsoft | Spam Analysis | "Your Spam Specimen Has Been Processed." | Got the <http://www.microsoft.com/en-us/download/details.aspx?id=18275> Junk Mail Reporting Tool ? From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of frnk...@iname.com <mailto:frnk...@iname.com> Sent: Wednesday, April 6, 2016 10:32 PM To: 'Tara Natanson' <tar...@natanson.net <mailto:tar...@natanson.net> >; mailop <mailop@mailop.org <mailto:mailop@mailop.org> > Subject: Re: [mailop] Hotmail connection errors We saw this in small part today, starting at 10:45 am (Central), and clearing up by 6:36 pm. Our email server logged this; 399 TCP Read failed (Connection reset by peer after 32 seconds) Across several MXes. Frank From: mailop [mailto:mailop-boun...@mailop.org] On Behalf Of Tara Natanson Sent: Wednesday, April 06, 2016 11:42 AM To: mailop <mailop@mailop.org <mailto:mailop@mailop.org> > Subject: [mailop] Hotmail connection errors Hello, For about the last hour we have seen a huge spike in connection errors and timeouts at Hotmail MXs. They are holding connections open for a long time and then simply timing out. Spread across entire netblock. Anyone else seeing similar? Tara Natanson
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