I suggest you set
	g_rcpt_max "1000"
	g_rcpt_max_in "100"
	g_spam_allow "ip.address.of.church,chruch2,church3"
You could use wild cards for ip addresses in your local area, e.g.
	g_spam_allow "123.23.*"
to fairly quickly cover any local places that would be likely to send to 
your users in bulk like this.




On 9/11/2011 11:06 a.m., Frank Bulk wrote:
> We have customers (churches and schools, primarily), that have their own email server and want to send one email to hundreds of our customers.  They keep hitting up against the "Limit for recipients of untrusted channels, default g_rcpt_max", which we've set to 100.
>
> How do we overcome that in way that minimizes abuse by spammers?
>
> Frank
>