Cannot send a 21 MB Zip file through EWS

My personal email account has 0 for the size limit, priorities area has 100 MB but when I try to send an email via Mac's Mail app connected to exchange (El Capitan) it was my mail server has an error. I had to check the option to send large attachments through mail drop.

Why can I not send a 20 MB zip file as an attachment??? I looked over all of the settings for my domain and my user and cannot find out what is preventing this.

Neal Culiner Replied

2/1/2016 at 8:38 AM

I'm a software developer, I wonder if there is a configuration item required for web services needed in the web.config to allow larger file streams over the service layer?

Bruce Barnes Replied

2/1/2016 at 10:00 AM

Your e-mail host has probably set an attachment size limit on your mailbox and/or domain. It may be a de facto standard limit that's applied to all domains when they are built.

If they (you) are running under SmarterMail, this can be overridden in the domain's settings - both the domain master settings, and the individual domains.

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/ Web and E-Mail Hosting, E-Mail Security and Consulting

Neal Culiner Replied

2/1/2016 at 10:04 AM

I am the host, I'm the admin, I'm the software developer :) - I have checked these values and they are not restrictive to this extent. My account personally is 50 MB, all other places a 0 value is entered for unlimited. I believe this is a EWS bug and possibly a configuration issue for web services in the .NET web config file.

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