King Computer Solutions

Posts Tagged NDR


Exchange 2007 or 2010 stopping NDR from postmaster@ filling queues from backscatter spam

If you find your queues are getting full of NDRs from the postmaster to spammers you can turn off allow non-deliveyr reports in the Hub transport\remote domains\default\properties This however will stop NDRs from being generated that are valid. You may therefore want to configure anti spam filtering If running a single exchange server with hub […]


Receiving domain.local #5.7.1 smtp;550 5.7.1 RESOLVER.RST.AuthRequired; authentication required

When sending to an exchange 2007 recipient or distribution list you may receive the following message: Your message did not reach some or all of the intended recipients. –