Error loading eml attachment

Question

Hello,

I am testing out the Pop3 Mail component to see if we want to replace our existing Pop3 Mail component. Our current component locks up after a while and is not robust enough for our use.

Our process is as follows:

1. Emails are journaled to a specific pop3 email account as an attachement.
2. I developed a service that will monitor the account for new emails and verify that the attachment is a mail message by checking the attachements DisplayName.
3. attachement is saved to a memorystream and reloaded as another MailMessage, which is then processed into the database.

When I call the MailMessage.Load(stream) I get the following error message: Unable to parse mail message, headers end with an invalid line.

If I save the attachment as a file with the extension .eml and call MailMessage.Load with the filepath it loads fine.

Could you please let me know if there is a known issue with loading a memorystream? I'd prefer to not save the files to the disk as this process will operate on 2000 - 3000 emails daily. This issue is repeatable on every email I tried to load from a stream.

Thanks,

Don Tompkins

Answer 1

This error typically arises when the stream pointer is at the End of stream (so reading from the stream returns nothing).

Please ensure the stream.Position = 0 before you call the mail.Load(stream) method.