The mailing list for listmasters using Sympa

[Matt Taggart <address@concealed>]

Gonzalo Palacios Goicolea writes:

> I've an issue sending mails with large files attached. When I send a message
> toa list with for example a pdf document of 13 Mb, I can see at postfix its
> size is increased to 18 Mb (why ? It is so much...) so I changed all the
> limits (postfix and mysql 'max_allowed_packet', sympa max_size is 33 Mb) to
> 20 Mb.

Email attachments need to be encoded (base64 or uuencode usually) for 
transmission and that changes their size, often making them larger. What 
you are seeing is normal IMO.

-- 
Matt Taggart
address@concealed