Maximum Attachment Size In Microsoft Exchange Server 2013

    General discussion

  • Hi

    Please share how much file size in MB (attachment) we can send on email in Microsoft Exchange Server 2013 platform.


    Thursday, March 3, 2016 5:11 AM

All replies

  • There is no configured attachment size by default in Exchange 2013.

    There are default size limit for overall messages ranging between 10MB to 35MB as per

    As a rule of Thumb I normally limit the inbound/outbound message limit to 40MB which is a reasonable size nowadays.

    Take in consideration that larger allowances lead to more load for your message hygiene devices as well as likelihood of your emails being rejected by other servers.



    Thursday, March 3, 2016 8:31 AM