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rocklee44
rocklee44
New Member
June 5, 2018
Question

Increase maximum message size

  • June 5, 2018
  • 2 replies
  • 40851 views

Hi all,

This is my environment : Exchange server 2013 CU19 + Fortimail 400E Firmware version : v5.3,build653,180328 (5.3.12 GA)  operates as gateway mode

Outgoing messages : from Exchange server go straight to internet not via Fortimail

Incoming messages : are scanned by Fortimail before come to Exchange server

I want to increase maximum message size from 10MB (default) to 20MB, I followed document to edit Mail Settings --> Domains and Profile session but it doesn't work.

Incoming messages larger then 10MB are rejected "The response from the remote server was:

552 5.2.3 Message size (20611500) is over limit (10485760)

"

What should I do ? Please give me some advices , thank you very much.

I'm sorry, I tried to upload images but it doesn't show up, I will try again.

    2 replies

    Bromont_FTNT
    Staff
    Bromont_FTNT
    Staff
    June 5, 2018

    Do you have an IP policy with a catch all (0.0.0.0/0) that contains the session profile with the 20MB limit?

    rocklee44
    rocklee44Author
    New Member
    June 6, 2018

    This is my IP policy setting

    abelio
    SuperUser
    abelio
    SuperUser
    June 5, 2018

    Hi Jack

     

    rocklee44 wrote:

     

    Incoming messages larger then 10MB are rejected "The response from the remote server was:

    552 5.2.3 Message size (20611500) is over limit (10485760)

    "

    For incoming messages, fortimail will check both domain settings and session profile matching your traffic. Whether you don't provide session profile or IP policy matched as Bromont_FTNT said, the 10MB default value will be compared with the size limit you have defined in the domain configuration under "advanced settings". Lower value will be applied.

     

     

     

     

     

     

    rocklee44
    rocklee44Author
    New Member
    June 6, 2018

    Hello Bromont_FTNT and abelio, thanks for your replies, I know that fortimail will check both domain settings and session profile matching my traffic, I defined both of them and applied session profile to IP policy. I'm sorry something went wrong with image upload feature so my images cannot show up and I can only attach 1 image file 1 time. Please view my domain setting in attach file.

     

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