Configuration Settings document - MIME - Conversion Options - Outbound tab
Use the MIME - Conversion Options - Outbound tab to set options that control how IBM® Lotus® Domino™ converts IBM® Lotus® Notes® rich text messages into MIME when sending outbound messages over SMTP.
Field Description
Attachment encoding methodWhen a Notes client sends a message with a file attachment that contains 8-bit data -- for example program, image, sound, video, and application files -- Domino encodes the attachment data as ASCII text for SMTP transport. Choose the encoding method best suited to the file types sent and supported by the majority of likely message recipients.

Note This field does not control encoding for messages sent from Macintosh version of the Notes client. For information about configuring attachment encoding for Macintosh clients, see the topic Setting advanced outbound MIME options and refer to the MIME - Advanced - Advanced Outbound Message Options tab.

  • Base64 - (default) This is the preferred method for encoding non-text data attachments when sending messages to recipients who use MIME-compliant mail programs. Base64 encoding converts binary data in attachments into a subset of the US-ASCII character set and is slightly more efficient than UUencode, resulting in a transmitted file approximately 37% larger than the original.
  • Quoted Printable - This method is best suited to sending text-based files to recipients that use MIME-compliant mail programs. Quoted-Printable (QP) encoding replaces each special character in the attachment with an equal sign "=" followed by two hexadecimal digits, which represent the 8-bit character code. Printable ASCII characters are left unencoded. QP provides efficient encoding of text-based files, creating an encoded file that's only a fraction larger than the original. However, for non-text files, QP encoding can result in encoded files that are two to three times the size of the original.
  • UUencode - Use UNIX-to-UNIX encoding on servers that send message attachments primarily to recipients who use UNIX or older PC mail programs. UUencode increases the size of the encoded file by about 42%.
  • BinHex - Use when sending primarily to recipients who use Macintosh mail programs
Message ContentSpecifies how Domino structures the MIME content of messages when converting Notes rich text messages before sending them over SMTP. Choose one:
  • Convert from Notes to plain text - (default) Domino converts the text in a Notes rich text document to plain text. If the message contains file attachments or images, Domino includes these as attachments by creating a multipart/mixed MIME message with the images and attachments following the text/plain part. Use this option in organizations that send most of their outbound mail to mail systems that are unable to handle MIME messages containing multiple text parts (for example, messages with the multipart/alternative structure that includes text/plain and text/html parts.
  • Convert from Notes to HTML - Domino converts the text in a Notes rich text document to HTML. If the message contains file attachments, Domino creates a multipart/mixed MIME message and includes the attachment in that part. If the message contains images, Domino includes the images in the message body by creating a multipart/related part.
  • Convert from Notes to Plain Text and HTML - Domino converts the text in a Notes rich text document to both plain text and HTML by creating a multipart/alternative body part that contains both the text/plain and text/html parts. If the message contains file attachments, Domino creates a multipart/mixed MIME message and includes the attachment in that part. If the message contains images, Domino creates a multipart/related part and includes the image in that part along with the text parts.
  • Create multi-part alternative including conversion and encapsulation - Domino converts Notes rich text messages as in the previous option and create an additional file attachment that contains a Notes database with the original message in it.
Convert tabs to spacesChoose one:
  • Yes - Enables the Router to change tabs to spaces. when converting outbound messages to MIME format.
  • No - (default) The Router does not change tabs to spaces when converting outbound messages to MIME format
Outbound line lengthThe maximum line length from left to right for the body of outbound messages; useful when a message contains long lines of text without spaces -- for example, URLs.

If there is a table or forwarded mail headers, then the line length default is doubled so no line break occurs until 150.

(default = 75)

Lookup Internet address for all Notes addresses when Internet address is not defined in documentAll addresses on messages sent to Internet recipients must be in Internet format (RFC 821/822 format). A Notes user may send a message to both Notes addresses and Internet addresses. To specify how Domino converts the addresses of Notes recipients on messages sent to the Internet, choose one:
  • Enabled - On outbound Internet messages, if the address of any recipient is in Notes format, Domino reads the user's Internet address from the Person document and adds it to the message before sending.
  • Disabled - (default) Domino forms Internet addresses by converting spaces into underscores and encoding Domino domains with percent signs. For example: John_Smith%Notes@acme.com
Perform exhaustive lookups when converting Notes addresses to Internet addressesChoose one:
  • Enabled - The Router searches all directories to ensure that there are no duplicate recipient names that might prevent delivery to the correct mail file. Performing exhaustive lookups is time-consuming and places a heavy load on the server.
  • Disabled - (default) The Router limits its search to the first directory that contains the address.