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E-mails undeliverable 554 error corrupt content

  • 3 replies
  • 1 has this problem
  • 2 views
  • Last reply by Matt

Made07
Made07
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Hey guys,

I am using Thunderbird already for about 2 years now and never had any issues when operating on my Mac OS, but the last 2 weeks I am getting those error messages from ALL my 5 accounts which I use in Thunderbird when sending out e-mails:


Remote Server returned '554 5.6.0 Invalid message content'


AND


  1. 554-5.6.0 Corrupt message content 554 5.6.0 STOREDRV.Deliver.Exception:ConversionFailedException.MimeException; Failed to process message due to a permanent exception with message The message content has become corrupted. MimeException: MIME content error: Wrong magic number in Apple MIME attachment. ##


I already tried to remove the MimeTypes.rdf file in my profile Libraby but that doesn't solve the problem. Every time when I RECEIVE an e-mail with an attachment I have to select the program again (Acrobat Reader) to read the attached PDF for example. And then the MimeType.rdf returns.

But even when I am just saving the attachments (and not selecting a program to open the attachment) the e-mails I send out are returning as 'undeliverable'.

I can't recall any update of Thunderbird or any changes in SMTP-server or something like that.

Any idea how to solve this? Many thanks in advance!

Hey guys, I am using Thunderbird already for about 2 years now and never had any issues when operating on my Mac OS, but the last 2 weeks I am getting those error messages from ALL my 5 accounts which I use in Thunderbird when sending out e-mails: Remote Server returned '554 5.6.0 Invalid message content' AND #554-5.6.0 Corrupt message content 554 5.6.0 STOREDRV.Deliver.Exception:ConversionFailedException.MimeException; Failed to process message due to a permanent exception with message The message content has become corrupted. MimeException: MIME content error: Wrong magic number in Apple MIME attachment. ## I already tried to remove the MimeTypes.rdf file in my profile Libraby but that doesn't solve the problem. Every time when I RECEIVE an e-mail with an attachment I have to select the program again (Acrobat Reader) to read the attached PDF for example. And then the MimeType.rdf returns. But even when I am just saving the attachments (and not selecting a program to open the attachment) the e-mails I send out are returning as 'undeliverable'. I can't recall any update of Thunderbird or any changes in SMTP-server or something like that. Any idea how to solve this? Many thanks in advance!

All Replies (3)

Matt
Matt
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  • Top 10 Contributor
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Do you have an email signature with an image?


BTW mime type is about what to do with incoming attachments, rejection by the server is about invalid or incorrect mime types. Often pasting stuff into signatures makes invalid mime types of images that are embedded.

Made07
Made07 Question owner
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Yep I do have a signature with an image. But I've had that for years already. Of course, sending e-mails without signature is an option. I am not married to that image :), but is there a way to bypass this?

Thanks for the MIMEtype advice, makes sense.

Matt
Matt
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  • Top 10 Contributor
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well lets try sending something without the signature. If that works, send me the signature to the email in my profile (Click my name)

In Thunderbird select write, save as draft and then from the drafts folder select Ctrl +U to open the source.

Save this source in a text file (copy and paste into whatever OSX uses for the purpose)