February 11, 20215 yr I have my unraid (v 6.8.3) box connected to UPS and set to email me if power outages happen. We just had a few quick blips (off/on) which then of course triggered unraid to send multiple notifications in quick succession which triggered sender thread limit. https://docs.microsoft.com/en-us/exchange/troubleshoot/send-emails/smtp-submission-improvements Quote An additional limit is being added. Under the new limit, up to three concurrent connections are allowed to send email messages at the same time. If an application tries to send more than three messages at the same time by using multiple connections, each connection will receive the following error message: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded This resulted me not getting the final power back up notification. Logs: Feb 11 10:55:46 husky apcupsd[8835]: Power failure. Feb 11 10:55:49 husky apcupsd[8835]: Power is back. UPS running on mains. Feb 11 10:55:50 husky apcupsd[8835]: Power failure. Feb 11 10:55:56 husky apcupsd[8835]: Running on UPS batteries. Feb 11 10:55:56 husky sSMTP[30556]: Creating SSL connection to host Feb 11 10:55:56 husky sSMTP[30556]: SSL connection using ECDHE-RSA-AES256-GCM-SHA384 Feb 11 10:55:59 husky sSMTP[30556]: Sent mail for [email protected] (221 2.0.0 Service closing transmission channel) uid=0 username=root outbytes=651 Feb 11 10:56:01 husky apcupsd[8835]: Mains returned. No longer on UPS batteries. Feb 11 10:56:01 husky apcupsd[8835]: Power is back. UPS running on mains. Feb 11 10:56:02 husky apcupsd[8835]: Power failure. Feb 11 10:56:03 husky sSMTP[30627]: Creating SSL connection to host Feb 11 10:56:03 husky sSMTP[30627]: SSL connection using ECDHE-RSA-AES256-GCM-SHA384 Feb 11 10:56:05 husky sSMTP[30627]: Sent mail for [email protected] (221 2.0.0 Service closing transmission channel) uid=0 username=root outbytes=636 Feb 11 10:56:08 husky apcupsd[8835]: Running on UPS batteries. Feb 11 10:56:12 husky apcupsd[8835]: Mains returned. No longer on UPS batteries. Feb 11 10:56:12 husky apcupsd[8835]: Power is back. UPS running on mains. Feb 11 10:56:15 husky sSMTP[30705]: Creating SSL connection to host Feb 11 10:56:15 husky sSMTP[30705]: SSL connection using ECDHE-RSA-AES256-GCM-SHA384 Feb 11 10:56:15 husky sSMTP[30706]: Creating SSL connection to host Feb 11 10:56:15 husky sSMTP[30706]: SSL connection using ECDHE-RSA-AES256-GCM-SHA384 Feb 11 10:56:16 husky sSMTP[30706]: 432 4.3.2 STOREDRV.ClientSubmit; sender thread limit exceeded. Visit aka.ms/concurrent_sending for more info. [Hostname=SN7PR06MB7199.namprd06.prod.outlook.com] Feb 11 10:56:17 husky sSMTP[30705]: Sent mail for [email protected] (221 2.0.0 Service closing transmission channel) uid=0 username=root outbytes=651 There are various smtp options to slow down sending/throttle if postfix was being used: http://www.postfix.org/TUNING_README.html#slowdown Not sure how to solve this with ssmtp/sendmail (notify wrapper), I guess just add slight delay before/after notification is sent out? so next one doesnt trigger limit? Edited February 11, 20215 yr by zoggy
Archived
This topic is now archived and is closed to further replies.