🚀 go-pugleaf

We have been experiencing difficulties with MX records.  

In the case of a couple of nodes for which MX records have been installed if
sendmail is not running on those nodes, the e-mail addressed to them is sent to
the other node to which it should be sent but, instead of staying there or being
forwarded to some third node, it is held in defered status on that node,
addressed to the node to which it was originally addressed and not deliverable.  

In one case, if sendmail is running, then e-mail addressed to that node is sent
on correctly to the other node to which the MX record points but if the addressee
user's personal forwarding is set to the node which should be bypassed by the MX
record, it is sent on there despite the MX record.  

The MX record thus seems to occasion correct forwarding to the node to which it
points but to stop working after that, leaving mail to be either sent on to the
node which is supposed to be bypassed or sit in mailq in deferred status.  

For other nodes for which we have installed MX records, they work correctly.  We
would like to hear any possible explanations.

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Douglas Kline                           Smithsonian Astrophysical Observatory
kline@cfa.harvard.edu                   60 Garden Street, MS 58
Phone: 617 495-7157                     Cambridge, MA  02138