Hi David, Are you sending a huge number of mails? Could it be some kind of ISP SMTP limit?
HTH Koen Op 7-nov.-2016, om 02:07 heeft [email protected] het volgende geschreven: > A customer sending emails from a variety of computers within their LAN > intermittently gets 10042 SMTP 550 mail box unavailable. > > We changed the sending configuration a few months ago and things worked much > better for a while, but this error (10042 SMTP 550 mail box unavailable) is > becoming more common. -------------------- Compass bvba Koen Van Hooreweghe Kloosterstraat 65 9910 Knesselare Belgium tel +32 495 511.653 ********************************************************************** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************

