Notes/Domino 6 and 7 Forum : Thanks and I think you are right...

"In this example, the logo part has a Content-ID, which suggests there was a cid: tag in the HTML for it, but the missing attachment does not." - absolutely correct; there was a cid tag in the HTML for the logo which is why it was rendered correctly

"whether or not the root part(s) contain a cid: for this 'missing' attachment" - they do not and so...

"they get into this grey area of how an unrelated part should be handled by the receiving MUA"

I have attempted to duplicate this by inserting a similarly formatted message with the same attachment directly into the same Domino MTA, using Outlook Express and it comes up with a completely different MIME structure which works (i.e. the attachment is available) - shown below for the morbidly curious.

I am now getting the person who sent the original broken message to send others so that I can see how reproducible the fault is, but the theory about "MUME - Messed Up Mime from Exchange" looks tempting.

Content-Type: multipart/mixed;
boundary="----=_NextPart_000_000B_01C284EB.16B69280"

------=_NextPart_000_000B_01C284EB.16B69280
Content-Type: multipart/related;
type="multipart/alternative";
boundary="----=_NextPart_001_000C_01C284EB.16B69280"

------=_NextPart_001_000C_01C284EB.16B69280
Content-Type: multipart/alternative;
boundary="----=_NextPart_002_000D_01C284EB.16B69280"

------=_NextPart_002_000D_01C284EB.16B69280
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain;
charset="Windows-1252"

[plain text message snipped]

------=_NextPart_002_000D_01C284EB.16B69280
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html;
charset="Windows-1252"

[HTML message snipped]

------=_NextPart_002_000D_01C284EB.16B69280--

------=_NextPart_001_000C_01C284EB.16B69280
Content-Type: image/gif;
name="sunbannA.gif"
Content-ID: <000901c284eb$16b35e30$2d00280a@vans.ldv.co.uk>
Content-Transfer-Encoding: base64

[An image used in the HTML version ssnipped]

------=_NextPart_001_000C_01C284EB.16B69280
Content-Type: image/jpeg;
name="Sunflower Bkgrd.jpg"
Content-ID: <000a01c284eb$16b4e4d0$2d00280a@vans.ldv.co.uk>
Content-Transfer-Encoding: base64

[another image from the HTML version snipped]

------=_NextPart_001_000C_01C284EB.16B69280--

------=_NextPart_000_000B_01C284EB.16B69280
Content-Type: application/x-zip-compressed;
name="VanDirect4ExtServer.zip"
Content-Disposition: attachment;
filename="VanDirect4ExtServer.zip"
Content-Transfer-Encoding: base64

[and the attachment]

------=_NextPart_000_000B_01C284EB.16B69280--

Notes/Domino 6 and 7 Forum

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