Exception caught at sending SMTP Email: 5.7.1 Unable to relay

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1

Hi, I am having error sending SMTP email via robot and the exception message that I receive is as below

Exception caught at sending SMTP Email: 5.7.1 Unable to relay

I researched and it seems like it is due to authentication level but the email address has worked in other environment.

2

Hi @inyourgravity,
Have you tried to use different package version? Are there any differences between environments?

3

The mail activities package used is 1.1.6562.21018
There is no differences that we are aware of, but we’re looking into it.

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4

Have you found a solution. I’m having the same issue.

MailKit.Net.Smtp.SmtpCommandException: 5.7.1 Unable to relay
at UiPath.Mail.Activities.SendMailActivity.EndExecute(AsyncCodeActivityContext context, IAsyncResult result)
at System.Activities.AsyncCodeActivity.System.Activities.IAsyncCodeActivity.FinishExecution(AsyncCodeActivityContext context, IAsyncResult result)
at System.Activities.AsyncCodeActivity.CompleteAsyncCodeActivityData.CompleteAsyncCodeActivityWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager)

5

It seemed like our client’s IT did not add robot’s email address into the relay list. After it was added, the issue was solved.

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6

Our hosting partner had not set up everything for my new robot machine. Messages from its IP were not allowed through the SMTP server.

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