[CentOS] OT: good free email service ?

On 12/02/2018 06:41 AM, Chris wrote:
> On Sat, 10 Nov 2018 00:22:00 -0800
> Alice Wonder <alice at domblogger.net> wrote:
> 
>> I run my own, using postfix + dovecot + roundcube, but because I
>> can't afford my own subnet - I end up constantly on spam blacklists
>> when someone else on my subnet sends spam.
> 
> which blacklists are this?
> 

spamhaus zen