This error code is for aborted connections. You may have a message in your queue that is being blocked by a spam filter at the recipient's server that is ending the SMTP conversation abruptly, without the usual 5xx messages. Andrew From: LISTSERV site administrators' forum [mailto:[log in to unmask]] On Behalf Of Curtis Stevens Sent: Tuesday, July 10, 2012 2:02 PM To: [log in to unmask] Subject: Send error: Unknown error [10053] I started getting these in my SMTPS#1 about 10 days ago. The error is being recorded once every few seconds and is creating a large log... Would somebody please explain the source of this error... ------------------------------------------------- Curtis E. Stevens Director, Standards & Features Technology 3355 Michelson Dr. #100 Office: 1-1041 Irvine, Ca. 92612 Phone: 949-672-7933 Cell: 949-307-5050 E-Mail: [log in to unmask]<mailto:[log in to unmask]> Remember, you may only be blamed for something if you are actually doing something. ________________________________ To unsubscribe from the LSTSRV-L list, click the following link: http://peach.ease.lsoft.com/scripts/wa.exe?SUBED1=LSTSRV-L&A=1 ############################ To unsubscribe from the LSTSRV-L list: write to: mailto:[log in to unmask] or click the following link: http://peach.ease.lsoft.com/scripts/wa.exe?SUBED1=LSTSRV-L&A=1