# Sentinel Not sending notification

**URL:** <https://forum.openzeppelin.com/t/sentinel-not-sending-notification/30058>\
**Category:** Defender\
**Created:** [June 30, 2022, 12:12pm UTC](https://forum.openzeppelin.com/t/sentinel-not-sending-notification/30058 "2022-06-30T12:12:58Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![amaurer-rise](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/amaurer-rise/32/11226_2.png) [@amaurer-rise](https://forum.openzeppelin.com/u/amaurer-rise)\
**Post date:** [June 30, 2022, 12:12pm UTC](https://forum.openzeppelin.com/t/sentinel-not-sending-notification/30058/1 "2022-06-30T12:12:58Z")

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I haven't received Sentinel notifications since yesterday

**💻 Environment**  
Arbitrum One

**📝Details**  
Sentinel setup to watch Transfers  
8f3b82a8-538c-48eb-848d-f4e4c339c663

Sent transaction which should notify

> **[Arbitrum Transaction Hash (Txhash) Details | Arbiscan](https://arbiscan.io/tx/0xf6e4a84ba73956cbca3cf4f03926647d921a13047eb59f3de4049af18b71ce76#eventlog)**
>
> Arbitrum (ETH) detailed transaction info for txhash 0xf6e4a84ba73956cbca3cf4f03926647d921a13047eb59f3de4049af18b71ce76. The transaction status, block confirmation, gas fee, ETH, and token transfer are shown.

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**Author:** ![MartinVerzilli](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/martinverzilli/32/1912_2.png) [@MartinVerzilli](https://forum.openzeppelin.com/u/MartinVerzilli)\
**Post date:** [June 30, 2022, 12:25pm UTC](https://forum.openzeppelin.com/t/sentinel-not-sending-notification/30058/2 "2022-06-30T12:25:25Z")

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Hi @amaurer-rise, thanks for the heads up. Will look into it and get back to you when we have more details.

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**Author:** ![MartinVerzilli](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.openzeppelin.com/martinverzilli/32/1912_2.png) [@MartinVerzilli](https://forum.openzeppelin.com/u/MartinVerzilli)\
**Post date:** [July 1, 2022, 10:55am UTC](https://forum.openzeppelin.com/t/sentinel-not-sending-notification/30058/3 "2022-07-01T10:55:17Z")

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Hi @amaurer-rise, the time of your report correlates with higher than usual loads on our Arbitrum sentinels on June 30th, around 12pm to 1pm UTC. I would expect everything to be normal at the moment, do let us know if you're still experiencing this issue.

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**Author:** ![LNjack](https://avatars.discourse-cdn.com/v4/letter/l/b4bc9f/32.png) [@LNjack](https://forum.openzeppelin.com/u/LNjack)\
**Post date:** [December 8, 2022, 9:13am UTC](https://forum.openzeppelin.com/t/sentinel-not-sending-notification/30058/4 "2022-12-08T09:13:30Z")

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Hi @MartinVerzilli , I setted up various sentinels.

- I wrote a Sentinel for the function "allowUser." It worked when there is only one address allowed. However, when I allow a batch of transaction (from 2 to many), the sentinel doesn't work even if the transaction is executed correctly. (I left the variable box empty)

-I wrote a Sentinel for the transfer event as well. But it doesn't work at all.

I already sent you an email about that, hope you have seen it.  
Best.