This post was split from topic:
One of the Zaps that has been working for over a year suddenly stopped responding and asking to log into the STMP credentials. I have logged back in as I would any other zap credential and getting the error message below. I am not sure what else I can do. Any advise would greatly be appreciated.
We use port 587 and I logged in with my company credentials similar to the past. Used the same Host address.
![](https://uploads-us-west-2.insided.com/zapier-ca/attachment/bb2abbfd-c8df-4f39-b330-ed1dd0553b64.png)
Best answer by ken.a
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