On 10/14/2014 3:32 PM, superstator . wrote: > Hello! > I have a poorly behaved voicemail system that I am trying to funnel > through a postfix relay, and I haven't been able to get past the > issue of the voicemail wanting to send a bare EHLO (no hostname > supplied at all) at the beginning of every transaction. > I started a question over at stackexchange about this > (http://unix.stackexchange.com/questions/161901/disable-postfix-helo-checks-completely), > and came to the conclusion that it's just not possible with postfix > as is. > > Would this be worth considering as a new feature? It certainly > wouldn't make sense as a default option, but as something one could > deliberately enable it might be useful. What's the process if > somebody wants to code a patch and submit it? > > Thanks! > Adrian Black
It seems this must be some misconfiguration on the voicemail box, but anyway... You can use smtpd_command_filter to hammer it into something acceptable. Something like: # main.cf smtpd_command_filter = pcre:/etc/postfix/smtpd_command_filter.pcre # smtpd_command_filter.pcre # Work around brain-dead empty EHLO /^EHLO$/ EHLO domain.invalid You might need to adjust the expression to match exactly what the voicemail system sends. This feature is available in postfix 2.7 and newer. -- Noel Jones
