[CAMEL-17812] camel-mail - MaxMessagesPerPoll / FetchSize should ignore unfetchable mails

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.15.0
• Fix Version/s: 3.16.0
• Component/s: camel-mail
• Estimated Complexity: Unknown
• Assignee: Unassigned
• Reporter: Manuel Shenavai
• Created: 16/Mar/22 21:27
• Updated: 18/Mar/22 15:07
• Resolved: 18/Mar/22 09:15

Description

Mailboxes can contain mails that can not be fetched and therefore can not be processed. These mails will not be processed but will be counted as part of the poll (MaxMessagesPerPoll / FetchSize). Unfetchable mails should not be part of the poll to avoid that message processing is blocked due to these mails.

 

Example for unfetchable mail:

• mails with attachments that have an empty name

 

Example Mail:
Return-Path: <[e-mail]>
Received: from host.docker.internal ([xxx.xx.xx.xx])
by smtp.somemail.com with ESMTPSA id gs18-20020a170906f19200b006d03cfb15e4sm1396942ejb.xxx.xxx.xxx.xx
for <[e-mail]>
(version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128);
Fri, 25 Feb 2022 11:55:31 -0800 (PST)
Date: Fri, 25 Feb 2022 20:55:29 +0100 (CET)
From: [e-mail]
To: [e-mail]
Message-ID: <[e-mail]>
Subject: This is the mail subject
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="----=_Part_0_932607259.1645818929513"

------=_Part_0_932607259.1645818929513
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

This is the message body
------=_Part_0_932607259.1645818929513
Content-Type: image/jpeg; name=""
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename=""

--{}{}{}=_Part_0_932607259.1645818929513{}

Issue Links

• links to: GitHub Pull Request #7213