Symptoms
The issue occurs when you use the POP3 adapter with POP3 mail servers that add a base64-encoded "Content-Description:" MIME header field to the MIME of emails with attachments. In some languages, attachments that have long names will cause the following error:
There was a failure executing the receive pipeline: "Microsoft.BizTalk.DefaultPipelines.PassThruReceive, Microsoft.BizTalk.DefaultPipelines, Version=3.0.1.0, Culture=neutral, PublicKeyToken=TokenID" Source: "Unknown " Receive Port: "ReceivePortPOP3" URI: "POP3://outlook.office365.com#EmailID" Reason: 0x8007005
After that, the POP3 adapter will stop receiving emails.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Resolution
This problem is fixed in the following cumulative update for BizTalk Server:
-
Cumulative Update 6 for BizTalk Server 2016
References
For information about the service packs and cumulative update list for BizTalk Server, see the following article in the Microsoft Knowledge Base:
2555976 Service pack and cumulative update list for BizTalk Server
For more information about BizTalk Server hotfixes, see the following article in the Microsoft Knowledge Base:
2003907 Information about BizTalk hotfixes and Cumulative Update support