[Bug]: Fails with one specific mail

[Twilek-de]

Bug Description

I am synching 4 accounts with over 90000 mails. Only one very old mail from 2012 fails. But I cannot find out why and how to find it (it is in the Archive of 2012)

mailarchive-app-1 | fail: MailArchiver.Services.EmailService[0]
mailarchive-app-1 | Error archiving message 461 from folder Archive/2012. Message: Failed to parse message headers.
mailarchive-app-1 | System.FormatException: Failed to parse message headers.
mailarchive-app-1 | at MimeKit.MimeParser.ParseMessageAsync(CancellationToken cancellationToken)
mailarchive-app-1 | at MailKit.Net.Imap.ImapFolder.ParseMessageAsync(Stream stream, CancellationToken cancellationToken)
mailarchive-app-1 | at MailKit.Net.Imap.ImapFolder.GetMessageAsync(UniqueId uid, CancellationToken cancellationToken, ITransferProgress progress)
mailarchive-app-1 | at MailArchiver.Services.EmailService.SyncFolderAsync(IMailFolder folder, MailAccount account, ImapClient client, String jobId) in /app/Services/EmailService.cs:line 490

How can I find out which mail is causing the problem and what goes wrong?

Steps to Reproduce

Try to sync with my mail accounts :-)

Application Version

2512.1

Installation Type

Docker

Management Tools

No response

Host System

Debian 13

Mail Provider

mailcow.de

Relevant Log Output

mailarchive-app-1 | fail: MailArchiver.Services.EmailService[0]
mailarchive-app-1 | Error archiving message 461 from folder Archive/2012. Message: Failed to parse message headers.
mailarchive-app-1 | System.FormatException: Failed to parse message headers.
mailarchive-app-1 | at MimeKit.MimeParser.ParseMessageAsync(CancellationToken cancellationToken)
mailarchive-app-1 | at MailKit.Net.Imap.ImapFolder.ParseMessageAsync(Stream stream, CancellationToken cancellationToken)
mailarchive-app-1 | at MailKit.Net.Imap.ImapFolder.GetMessageAsync(UniqueId uid, CancellationToken cancellationToken, ITransferProgress progress)
mailarchive-app-1 | at MailArchiver.Services.EmailService.SyncFolderAsync(IMailFolder folder, MailAccount account, ImapClient client, String jobId) in /app/Services/EmailService.cs:line 490

[shikousa]

@Twilek-de It seems that I have a similar issue, also one mail fails, but I do not know which one. How did you get the log output of mail-archiver?

[Twilek-de]

Actually I have just skipped the problem, by resetting the sync time to the present, so that mail-archiver does not try to sync the faulty mail any longer. Kind of a cheat, but it works.

[shikousa]

Ok. Can you please tell me where I can find the log output. You have seen that in your case the error happened in folder Archive/2012.

[Twilek-de]

The log entry in my initial post was the only thing I could find.

[shikousa]

In which log file did you find this, in the WebUI I don't see an entry.

[Twilek-de]

Docker logs...

[s1t5]

@shikousa The application logs to the Docker compose logs. See: https://github.com/s1t5/mail-archiver/blob/main/doc/DockerComposeLogs.md

@Twilek-de There is probably a corrupt email in the mailbox that unfortunately cannot be retrieved here. It is very difficult to identify this email, as I have no information about it except for the logged number, which is not really helpful. I would also have advised setting the sync time manually via the account details and ignoring this email.