Marc Perkel wrote: > What are the rules for HELO? One thing that bit us a couple of years ago was checking for strict domain format compliance. Some Exchange boxes will include a "_" in their HELO's. I think it's because Exchange uses the Windows computer name in a HELO. Under- scores are perfectly legal characters for Windows host names but not for DNS domains. So we add:
helo_allow_chars = _ to allow connections from those folks. -dub -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
