Trouble sending/receiving attachments over a certain size

[Fеnикs]

You're free to add that line to postfix with command (put your value after 
'='):
postconf -e message_size_limit=41943040
then reload postfix.

One more parameter that might be involved is 
https://httpd.apache.org/docs/2.0/mod/core.html#limitrequestbody. It's 
supposed to be unlimited by default, though.
For nginx that's http://wiki.nginx.org/HttpCoreModule#client_max_body_size, by 
default limited to 1M.

Respects,
Alexej

On Thursday 28 February 2013 22:46:49 you wrote:
> Thank you for your response Alexej!
> 
> The file is located in two places on my CentOS v6.3 system as below:
> 
> # find / |grep main.cf
> /etc/postfix/main.cf
> /usr/libexec/postfix/main.cf
> 
> however . . message_size_limit is not found in either file . .. any
> ideas ?
> 
> The other items I found and modified as below.
> But when I upload a file close but below that size the file indicates
> its uploading but never completes ??
> 
> Gregory.
> 
> On 02/28/2013 8:37 pm, Fеnикs wrote:
> > Hello!
> > 
> > There are 4 parameters you'll need to look at:
> > 1. post_max_size and upload_max_filesize in php.ini -- they will only
> > limit the size of attachments uploaded via webclient.
> > 2. message_size_limit in postfix/main.cf -- this will limit the size of
> > the
> > whole letter in postfix in bytes. Keep in mind, that this includes the
> > text of the message itself and, if attachment is not a text file, it will
> > be base64 encoded increasing it's size by about 1/3.
> > 3. max_allowed_packet in mysql/my.cnf -- this parameter also limits
> > message
> > attachment size, as Kolab passes messages through database.
> > 
> > So, if you'd like to allow your users to send mails with binary
> > attachments of 30M maximum, values would be something like:
> > php.ini:
> > post_max_size = 30M
> > upload_max_filesize = 30M
> > postfix/main.cf:
> > message_size_limit = 41943040
> > mysql/my.cnf
> > max_allowed_packet = 40M
> > 
> > Respects,
> > Alexej
> > 
> Links:
> ------