good afternoon I have a problem like to see if I can help I have a server installed following the theme of The Perfect Servidor - Ubuntu 14.04 (Apache 2, PHP, MySQL, PureFTPd, BIND, Palomar, ISPConfig 3) everything is well installed can send email to external servers but can not send email between internal accounts. it will be wrong with figurative burn can help attachment mail.log
I'm guessing it's just a typo in /etc/postfix/master.cf - search for 'submission' in that file, which should be the start of a newline, I'm guessing you may have accidentally joined it to the preceeding line (maybe that line ended with a backslash?)
I was already reviewing the master.cf file and find nothing strange the only thing that user accounts cad, when loaded by the web and the folder s inbox, drafts, trash tells me this folder is empty that could be the problem
