[Error] System.ArgumentOutOfRangeException: Index and length must refer to a location within the string.

[jasonchen100]

Hi,

I have this issue couple times. I have two window services running in different machines and connect to different email accounts (MS Exchange server 2013). Structure are as follows:

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email account A : (1) receive emails and redirect a copy to email account B (2) A window service will read emails and do what I code.

email account B: a service will read emails which redirect from email account A

*Both services runs same code, the difference are just point to different email account. (account A and account B)

But I received error as follows at account A's window service

Error: System.ArgumentOutOfRangeException: Index and length must refer to a location within the string. Parameter name: length at System.String.Substring(Int32 startIndex, Int32 length) at ActiveUp.Net.Mail.Fetch.ExtractMessageFromReponse(String response) at ActiveUp.Net.Mail.Fetch.MessageString(Int32 messageOrdinal) at ActiveUp.Net.Mail.Fetch.MessageObject(Int32 messageOrdinal)

I debug and find out that "ActiveUp.Net.Mail.Fetch.MessageObject" will fail but ActiveUp.Net.Mail.Fetch.HeaderObject(UnSeenMessage) can pass. I have run at least several months for over thousands of emails, only those certain email will fail ,but it works fine to those redirect emails.

Please advise.