Sign up ×  We're using the default SMTP server for our websites
to send mail with, but in the last day sending messages started
getting this error:  Insufficient system storage. The server
response was: 4.3.1 Out of memory  Further digging found this
message in the System event log:  SMTP server cannot create a
file in the queue directory C:\Inetpub\mailroot\Queue\  I've
since given the Everyone account full control of the mailroot
folder but it's still happening. There's enough space on the
server and to the best of my knowledge nothing on the server has
been changed  share|improve this question How's the memory usage
on the server look? –  mrdenny Jul 30 '10 at 1:09 And more
specifically, where's the Pool Nonpaged Bytes memory at? How
much memory is in the server? What edition of the OS? – 
joeqwerty Jul 30 '10 at 1:18 Physical is 1GB, available physical
is 374000 Nonpaged is 722000 –  Glenn Slaven Jul 30 '10 at 3:03
2 Answers 2  up vote 1 down vote accepted  [SOLVED] Hi guys,  In
the event that, like me,