Autosupport delivery fails due to low TCP recieve window size from the SMTP server
Applies to
- ONTAP 9
- Autosupport (ASUP) devliery using SMTP
Issue
- ASUP delivery fails despite multiple retries using SMTP.
cluster1::> autosupport history show
Seq Attempt Percent Last
Node Num Destination Status Count Complete Update
------------ ----- ----------- -------------------- -------- -------- --------
node1 1297
smtp transmitting 9 - 5/15/2022 15:41:38
http ignore 1 - 5/14/2022 00:52:12
noteto ignore 1 - 5/14/2022 00:52:12
1296
smtp ignore 15 - 5/15/2022 09:01:09
http ignore 1 - 5/13/2022 01:26:53
noteto ignore 1 - 5/13/2022 01:26:53
- Notifyd logs indicate a successful connection established to the SMTP server but later closes due to timeout.
Wed Jun 15 2022 02:13:01 +03:00 [kern_notifyd:info:1593] (category: 1593:1948:deliver) (emittime: 6/15/2022 01:49:00) (message: Operation timed out after 1200000 milliseconds with 0 bytes received)
Wed Jun 15 2022 02:13:01 +03:00 [kern_notifyd:info:1593] (category: 1593:1948:deliver) (emittime: 6/15/2022 01:49:00) (message: Marked for [closure]: Disconnected with pending data)
Wed Jun 15 2022 02:13:01 +03:00 [kern_notifyd:info:1593] (category: 1593:1948:deliver) (emittime: 6/15/2022 01:49:00) (message: Closing connection 0)