552 5.3.4 Message size exceeds fixed limit

Question

I already edited the main.cf file like this:

message_size_limit = 25600000
service postfix restart

postconf message_size_limit
message_size_limit = 25600000

I tried to send a mail with 18GB of total attachments and the log still showed:

NOQUEUE: reject: MAIL
552 5.3.4 Message size exceeds fixed limit; proto=ESMTP

Does something else can cause this?

[SMTP wasn't designed/recommended to send a big file](http://serverfault.com/a/304425/218590) — masegaloeh, Mar 27 '15 at 06:22

score 4 · Accepted Answer · answered Mar 27 '15 at 05:01

4

I needed an even bigger limit.

When sending an attachment, it's first converted to text (MIME), which causes it to be a bit larger... 25% - 33% larger, if I remember correctly.

answered Mar 27 '15 at 05:01

givanse

1 Answers1