On Tue, Jan 26, 2021 at 12:27:52PM -0500, Bill Cole wrote: > On 26 Jan 2021, at 11:38, Viktor Dukhovni wrote: > >On Tue, Jan 26, 2021 at 10:46:04AM -0500, Ruben Safir wrote: > > > >>I am getting this strange rejections to talk to NYC government > >> > [...] > >On Tue, Jan 26, 2021 at 11:04:39AM -0500, Bill Cole wrote: > > > >>>dig mx2.nycdoitt.iphmx.com > >> > >>[... list of A records snipped ...] > >> > >>Assuming that the "Diagnostic-Code" field of the rejection > >>message is in > >>fact the real reason for the failure and not doing something thatb > >>mimics DNS failure or tells outright lies, this indicates that > >>their DNS > >>resolver is broken. > > > >Whose DNS resolver? > > The system generating that "Diagnostic-Code" field claiming that > resolution isn't working for the perfectly resolvable Ironport name. > > I missed that the name is an MX for the recipient address, rather > than the name of the machine trying unsuccessfully to pass along the > message, i.e. based on the opening line I thought that the error > occurred while "talking to" the next hop.
How would I trace it. I think I used to trace this with sendmail so you could see all the steps > > -- > Bill Cole > b...@scconsult.com or billc...@apache.org > (AKA @grumpybozo and many *@billmail.scconsult.com addresses) > Not Currently Available For Hire -- So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 http://www.mrbrklyn.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 http://www.nylxs.com - Leadership Development in Free Software http://www2.mrbrklyn.com/resources - Unpublished Archive http://www.coinhangout.com - coins! http://www.brooklyn-living.com Being so tracked is for FARM ANIMALS and extermination camps, but incompatible with living as a free human being. -RI Safir 2013
