Quoting Jakob Hirsch:
> condition = ${if !match {$sender_helo_name}
> {\N^([a-z0-9][-_a-z0-9]*\.)+[a-z]{2,6}$\N}}
This should have been case-insensitive:
condition = ${if !match {$sender_helo_name}
{\N^(?i)([a-z0-9][-_a-z0-9]*\.)+[a-z]{2,6}$\N}}
I have it now running with warn/log_message, but there was no host
triggering it yet, so I guess it's really not useful.
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