Hi, I'm not quite sure if it still relevant, but the Administration guide of Syslog-ng PE 6 show the following for the flags(no-multi-line): "Note that this happens only if the underlying transport method actually supports multi-line messages. Currently the rltp, syslog(), network(), unix-dgram() drivers support multi-line messages" https://www.balabit.com/documents/syslog-ng-pe-latest-guides/en/syslog-ng-pe... I do not know if it would like to refer to the source or the destination either. But I think it should be ironed out in the BalaBit side, because if I remember correctly the file source does support multi-line messages. But if it talks about the destination drivers (in which case I think it should be articulated better), that can explain why it not worked for file destination and why it working for udp. From: syslog-ng-bounces@lists.balabit.hu [mailto:syslog-ng-bounces@lists.balabit.hu] On Behalf Of Newport, Brendan (Contractor - Security Operations - Development & Support) Sent: Friday, September 30, 2016 4:35 PM To: syslog-ng@lists.balabit.hu Subject: [syslog-ng] Converting multiline text input to concatanated single-line syslog format Classification: Public Ha! I think I might have been trying to achieve the impossible - getting syslog-ng to covert multiline log messages into concatenated syslog messages. That doesn't appear to work. But I defined syslogd instance to direct local5.info messatges received from my syslog-ng client into a log file and all works fine! more local5.log Sep 30 14:45:35 <hostname> local5:info <hostname> Table: IMP-386: ORACLE error 386 encountered ORA-01017: invalid username/passwo rd; logon deniedUsername: Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production Sep 30 14:45:35 <hostname> local5:info <hostname> Table: IMP-00034: Warning: FromUser "FALBOS" not found in export file With the P artitioning, OLAP and Data Mining options Export file created by EXPORT:V10.02.01 via conventional path Sep 30 14:45:35 <hostname> local5:info <hostname> Table: IMP-386: ORACLE error 386 encountered Warning: the objects were exported by FALCON, not by you import done in WE8ISO8859P1 character set and AL16UTF16 NCHAR character set Using this config is syslog-ng.conf; source s_table { file("<path to input multi-line log file>" multi-line-prefix("IMP") flags(no-parse) flags(no-multi-line) program_override("Table") default-facility(local5) default-priority(info)); }; filter f_local5_info { facility(local5) and level(info); }; and with the destination defined as a udp IP address to port 514; log { source(s_table); filter(f_local5_info); destination(d_syslog_udp); }; As the desire is to get multiline non-syslog logs off-host to Qradar as syslog messages, that's the POC passed fine! 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