tisdag 24 oktober 2017 kl. 15:53:20 CEST skrev du: > After the analysis by SpamAssassin an email can get a note between > SAtempreject and SApermreject. The mail can pass through the antispam > (according to the Greylisting phase) in which case it will include an > additional header: "X-Spam-Report" (result of the analysis by SpamAssassin). > > If Exim is configured with CHUNKING compatibility (RFC3030) in this case, > the calculation on the length of the mail is not correct. The length of the > mail does not take into account the length of the X-Spam-Report field. When > routing emails to a third-party server that is compatible with RFC3030, > attachments may be cut off by the remote server.
Sorry for not looking at this for so long. There are issues, but I doubt that adding headers is what causes any problems. A local_scan plugin is supposed to be able to do that and it's done using the functions provided for the purpose, no length is stored in the spool files AFAIK, and I haven't noticed any truncation when I tested CHUNKING. Maybe it was a bug in Exim itself, perhaps since fixed? The bugs I have reproduced and will fix are: 1) when more than one message is received over the same connection, the primary_hostname string gets overwritten, resulting garbage in the X-SA-Exim-Scanned header and possibly a broken spool file, but this can happen regardless of whether CHUNKING is in use; and 2) iff spool_wireformat is enabled, messages received using CHUNKING are stored with CRLF line endings and sent to SA that way, and SA will likewise return a message with CRLF line endings, but SA-Exim didn't handle that when scanning the header. Perhaps header lines with CR in them confuses/ confused Exim. -- Magnus Holmgren holmg...@debian.org Debian Developer
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