<adam.freebsd@fastmail.fm>: host in1-smtp.messagingengine.com[66.111.4.72] said: 550 5.1.1 <adam.freebsd@fastmail.fm>: Recipient address rejected: User unknown in local recipient table (in reply to RCPT TO command) <dnscheckengine-port@academ.com>: host ASPMX.L.GOOGLE.com[74.125.131.26] said: 550-5.1.1 The email account that you tried to reach does not exist. Please <kawahara@nlp.kuee.kyoto-u.ac.jp>: Sorry, no mailbox here by that name. (#5.1.1) <hnsmaster@h14m.org>: Host or domain name not found. Name service error for name=h14m.org type=AAAA: Host found but no data record of requested type <jre@vineyard.net>: Recipient address rejected: User unknown in virtual mailbox table (in reply to RCPT TO command) (in reply to RCPT TO command) <gawrilow@math.tu-berlin.de>: host mail.tu-berlin.de[130.149.7.33] said: 550 Recipient verify failed (in reply to RCPT TO command) <mico@bsd.hu>: host mail.datacast.hu[195.70.49.210] said: 550 5.1.1 <mico@bsd.hu>: Recipient address rejected: User unknown in virtual mailbox <gogo@cs.uni-sb.de>: host mail.cs.uni-sb.de[134.96.254.200] said: 550 5.1.1 <gogo@cs.uni-sb.de>... User unknown (in reply to RCPT TO command) <mickey@enforcer.cc>: Host or domain name not found. Name service error for name=keep.yourmail.yuk type=AAAA: Host not found <lucio@zetasolucoes.com.br>: host ASPMX.L.GOOGLE.COM[2607:f8b0:400c:c01::1a] said: 550-5.1.1 The email account that you tried to reach does not exist. <luke@novum.am.lublin.pl>: Host or domain name not found. Name service error for name=novum.am.lublin.pl type=AAAA: Host not found <aihal@users.sourceforge.net>: host mx.sourceforge.net[216.34.181.68] said: 550 unknown user (in reply to RCPT TO command) With hat: portmgr