OPNsense Forum

English Forums => General Discussion => Topic started by: vpx on May 05, 2026, 02:08:37 PM

Title: Postfix message_size_limit
Post by: vpx on May 05, 2026, 02:08:37 PM
In the Postfix plugin the default value is 51200000 Bytes.

I know it follows the convention of the original documentation.

message_size_limit (https://web.archive.org/web/20260430050546/http://www.postfix.org/postconf.5.html#message_size_limit)
(I linked via Wayback Machine as I don't know why the Postfix site is currently offline)

But does anybody know why that is?

I mean it is calculated as 50x1024x1000 = 51200000 Bytes.

Shouldn't it either be 50x1024x1024 = 52.428.800 Bytes or 50x1000x1000 = 50.000.000 Bytes?

I know the diference between KiB and KB, MiB and MB etc. but why is it a mixed case here?
Title: Re: Postfix message_size_limit
Post by: Patrick M. Hausen on May 05, 2026, 02:26:55 PM
I read that as 512 x 100.000. One power of two, one power of ten.