max mail size change for one domain

Hi Team

Is it possible to change the maximum size of email to send / receive for a single domain?

I have one client who regularly gets very large emails, and the sender is not able / wiling to use wetransfer or similar.

Can someone please advise how this can be achieved - if it needs to be a global setting then so be it, but info on how to make that change would be useful too

Thanks in advance

 

message_size_limit = 0
inside /etc/postfix/main.cf is the global setting for this (in bytes).

 

Hi Marius

thanks for that - is there a way to do it for specific domain? or does it have to be global?

 

You would have to implement a milter (something like a policy daemon), so it would be quite complicated to do this per domain.

 

Marius, I already have message_size_limit = 0, but outlook is telling me that "The Total Attachment Size exceeds the limit" any further thoughts?

 

I think outlook has an internal setting for that. I just found this on the net: https://www.lifewire.com/increase-outlook-attachment-size-limit-1173679
So default max in Outlook seems to be 25MB

 

apparently you cant do this change in outlook for Mac google comes up with nothing apple mail or spark to the rescue