The mailing list for listmasters using Sympa

["McLaren, Terry" <address@concealed>]

Below is an example config from an rhel7 system.  It can be added anywhere in 
/etc/postfix/main.cf.  However,
I recommend all config changes related to sympa remain in a sympa section of 
the config.
---- 
# The default maximum attachment size limit on a new Postfix installation is 
10 MB.  
# message_size_limit= defines a new limit.    
# virtual_mailbox_limit= is required if postfix is running in virtual mode.
# In this case a 15 Megabytes (MB) = 15,728,640 Bytes 
message_size_limit=15728640
virtual_mailbox_limit=15728640
---- 

Terry McLaren

-----Original Message-----
From: address@concealed 
<address@concealed> On Behalf Of Michael Young
Sent: Tuesday, September 21, 2021 11:07 AM
To: Widerski, Betty <address@concealed>; Stefan Hornburg (Racke) 
<address@concealed>; address@concealed
Subject: Re: [sympa-users] Post size increase

As a general rule, I found that setting any size limits to 30% of desired 
outcomes accommodates the size variances as messages go through various 
conversations.

Michael Young

On 9/21/21, 10:43 AM, "address@concealed on behalf of 
Widerski, Betty" <address@concealed on behalf of 
address@concealed> wrote:

    Good suggestion! Turns out the default Postfix config was 10MB, so will 
change that.

    -----Original Message-----
    From: address@concealed 
<address@concealed> On Behalf Of Stefan Hornburg (Racke)
    Sent: Tuesday, September 21, 2021 9:41 AM
    To: address@concealed
    Subject: Re: [sympa-users] Post size increase

    On 20/09/2021 23:41, Widerski, Betty wrote:
    > Hi -
    > 
    > We are POCing a 6.2 installation on RH Linux with the idea of replacing 
our Majordomo server. I am trying to find the appropriate max_size number to 
allow posts to be sized up to about 10MB including binary attachments. I am 
aware that the binary-to-mime conversion increases the post size. With 
Majordomo I determined that setting its maxlength to 13900000 resulted in 
acceptance of about 10MB original sized PDFs etc.
    > 
    > We originally had Sympa max_size = 10485760  - this has allowed posts 
of about 6.2MB PDFs
    > 
    > I've now upped max_size to 20971520 - this is still insufficient to 
allow an 8MB PDF.
    > 
    > I first tried changing the max_size in a specific list send/receive 
config, then changed it globally in sympa.conf and restarted sympa and 
wwsympa and teted a list getting the default max_size.
    > 
    > Do you allow posts of 10MB, and if so what is your max_size?

    Hello Betty,

    you are sure that is rejected by Sympa? It could be the mailserver in 
front of Sympa.

    The encoding shouldn't increase the size that much.

    Regards
             Racke

    >
    > Thanks
    > 
    > Betty
    > 
    > Betty Widerski
    > 
    > Enterprise Systems & Services - HBS Information Technology
    > 
    > *HARVARD  BUSINESS  SCHOOL*
    > 
    > Shad 108 N | address@concealed <mailto:address@concealed> | T: 
617.495.6642
    > 


    -- 
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    Debian and Sympa administration.