Dhammika Gunawardena: > Hi > I have setup smtp_header_checks to log subject lines in my mail log. > However the issue is messages are truncated to about 50 characters. > Is there any method to get the full Subject into log?
I suspect that you would like to have no limit on the amount of header text that will be logged, but that is not going to happen. All logging must be limited in size, so that it cannot be abused to bloat buffers or to spam logfiles. This is not a hypothetical problem: some logging systems are so inefficient that they use up more resources than the entire Postfix mail system. If you want to log headers longer than 200 bytes, then I suggest that you use a Milter (C/C++, Perl, Python, Rust, ...). Be aware that Postfix limits all header content with header_size_limit (default 102400 byes). Wietse