All, I should add that about the time we started having these issues, we began using Mimecast. We are looking into whether or not that might have anything to do with this. Thanx, Reed [SirsiDynix]<http://www.sirsidynix.com/> [Facebook]<http://www.facebook.com/SirsiDynix> [Twitter]<http://twitter.com/sirsidynix> [LinkedIn]<http://www.linkedin.com/company/sirsidynix> Reed Farnsworth KNOWLEDGE BASE ANALYST/CS TRAINING COORDINATOR [log in to unmask] 800-288-8020 ext. 5483 From: Reed Farnsworth Sent: Wednesday, May 8, 2019 10:33 AM To: [log in to unmask] Cc: Branick Petersen <[log in to unmask]> Subject: Probe failure errors Listserv Gurus and Mentors, Beginning a few weeks ago, nearly all of our Listserv daily error monitoring reports show the Last error as "5.1.0 Probe failed", as shown in the example below. This is strange for several reasons: · We don’t do probing. · The number of failures increased rapidly a couple of weeks ago. · We used to see other types of errors, but now we only see Probe failed errors. It’s as though the legitimate reasons for the errors are all being changed to Probe failed instead of what they should be. Here is an example of a recent report with names and email addresses redacted to protect the innocent: The following 7 subscribers were deleted from the SYSTEM-ADMIN list today: Redacted name and email address Last error was: 5.1.0 Probe failed Redacted name and email address Last error was: 5.1.0 Probe failed Redacted name and email address Last error was: 5.1.0 Probe failed Redacted name and email address Last error was: 5.1.0 Probe failed Redacted name and email address Last error was: 5.1.0 Probe failed Redacted name and email address Last error was: 5.1.0 Probe failed Redacted name and email address Last error was: 5.1.0 Probe failed The following 14 addresses are currently being monitored: (Remember, some addresses may not be subscribers.) Err First Last Address --- ----- ----- ------- 33 05/02 05/07 Redacted name and email address Last error: 5.1.0 Probe failed 17 05/06 05/07 Redacted name and email address Last error: 5.1.0 Probe failed 12 04/24 05/02 Redacted name and email address Last error: 5.1.0 Probe failed 11 04/24 05/02 Redacted name and email address Last error: 5.1.0 Probe failed 10 04/24 05/03 Redacted name and email address Last error: 5.1.0 Probe failed 5 05/02 05/06 Redacted name and email address Last error: 5.1.0 Probe failed 5 05/02 05/06 Redacted name and email address Last error: 5.1.0 Probe failed 5 05/02 05/06 Redacted name and email address Last error: 5.1.0 Probe failed 5 05/02 05/06 Redacted name and email address Last error: 5.1.0 Probe failed 5 04/29 04/30 Redacted name and email address Last error: 5.1.0 Probe failed 4 04/24 05/02 Redacted name and email address Last error: 5.1.0 Probe failed 4 04/25 04/30 Redacted name and email address Last error: 5.1.0 Probe failed 4 05/02 05/02 Redacted name and email address Last error: 5.1.0 Probe failed 1 05/06 05/06 Redacted name and email address Last error: 5.1.0 Probe failed Err= Number of delivery errors received thus far First= Date first delivery error was received (mm/dd) Last= Date of most current delivery error (mm/dd) Subscribers will be automatically deleted from the list when delivery errors have been reported for a period of 10 days or more, or when more than 100 delivery errors have been received, whichever occurs first. Monitoring will cease after 11 days without any reported errors. Note: Manually deleted subscribers may remain on the monitoring report under an alias address. Such entries will expire eventually. You do not need to do anything about them. Any thoughts on a cause or cure for this? Thanx, Reed [Kickstart Your RFP]<https://2019.alaannual.org/?src=sdftr> ALA ANNUAL CONFERENCE 2019 Washington, D.C. | Jun 20-25 [Kickstart Your RFP]<https://2019.alaannual.org/?src=sdftr> [Kickstart Your RFP]<https://shop.sirsidynix.com/?src=sdftr> GET YOUR POWER OF LIBRARIES GEAR Shop now for Shirts, Totes, Buttons, Mugs and more! 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