Hi Sujeeva, your mail needs a single dot („.“) at the end of the mail-message on a line for itself. This is the “end-mark” for every mail. If you send a mail from commandline on linux (or any *nix-system..), you end this mail with a single period at the beginning of a line, followed by <CR><LF>. Hence the “unexpected EOF” encountered in your error message. Regards, Reinhard Gesendet: Mittwoch, 13. September 2017 01:58 Betreff: [otrs] Auto Responses not send for ticket creation I have an issue in Auto Responses only for "default reply (after new ticket has been created)" It send all the emails but not this. Error I found in the "SchedulerTaskWorkerERR.log" is: Quote [Wed Sep 13 05:06:57 2017] otrs.Daemon.pl: Net::SMTP: Unexpected EOF on command channel at /opt/otrs/Kernel/System/Email/SMTP.pm line 170 ERROR: OTRS-otrs.Console.pl-Maint::PostMaster::MailAccountFetch-65 Perl: 5.10.1 OS: linux Time: Wed Sep 13 05:06:57 2017 Message: Can't send message: 354End data with <CR><LF>.<CR><LF> Unquote