The mailing list for listmasters using Sympa

[Josemari Amatriain Martínez <address@concealed>]

On Fri, 25 Sep 2015 14:20:06 +0200
David Verdin <address@concealed> wrote:

> Some antispam engine will reject silently to prevent backscattering.
> Could it be related?
> If your message is some kind of HTML newsletter, it can easily be tagged 
> as spam.
> 
> Also the number of outgoing sessiopns in postfix wil not correspond to 
> the number of mail receipients because Sympa groups receipients by 
> sessions, exept if you set the VERP rate to 100%.

The antispam engine is in other host. The postfix server (the one I checked) 
sends emails
to the spam engine, and this sending never took place.

About the number of recipients and sessions, I counted the number of 
recipients. 
I am aware of that detail. I have tuned my sympa.conf with nrcpt=5


Thaks for yours advices.