In addition to what Brian stated in his response, no external antivirus tool should ever directly access any item in any SmarterMail directory. External AV programs should only be called via the command line tool in SmarterMail.
If external AV programs are allowed to directly scan SmarterMail you will probably loose e-mail and have other issues caused by file locks.
This issue has been discussed several times previously in the Forums.
Bruce Barnes
ChicagoNetTech Inc
brucecnt@comcast.net
Phonr: (773) 491-9019
Phone: (224) 444-0169
E-Mail and DNS Security Specialist
Network Security Specialist
Customer Service Portal: https://portal.chicagonettech.com
Website: https://www.ChicagoNetTech.com
Security Blog: http://networkbastion.blogspot.com/
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