CRLF in attachments being replaced by LF

[Neal Morgan]

Seb James wrote:
> Hi list,
>
> I have a problem with some attachments being sent to me.
>
> I am using postfix and MailScanner and SpamAssassin to process
incoming
> mail.
>
> The attachments are raw print data, containing escape characters of
> various types and also CRLF pairs, as well as formfeeds, and lonely LF
> characters.
>
> Somewhere, the CRLF are being converted to LF, which messes up the
print
> data (test docs sent to me by customers for testing and problem
> resolution).
>
> I suspect spamassassin, am I right?
>
> Any way to turn spamassassin off for certain attachment file types,
such
> as any files ending in .prn and .dat? I know I can deny or allow files
> based on file types, but what about spamassassin scanning depending on
> file type?
>
> Thanks in advance for any help,
>
> Seb James

Just a wild guess - but since SMTP expects <CRLF>.<CRLF> to end the data
phase, is it possible that MUA (sending side) is performing this
replacement to prevent message truncation during delivery?

Try having the sender zip the file or rename to a type that Windows
doesn't consider text...