This is what the docs say under "Rejecting Senders" in terms of the formatting of the file:
spamdyke will block all incoming messages from a specific address with the sender-blacklist-entry option. If more than a few addresses are given, the sender-blacklist-file option is more efficient. The given file must contain one email address per line. Blank lines and lines beginning with # are ignored. If the sender-blacklist-file option is given multiple times, each blacklist file will be checked before the connection is blocked. https://www.spamdyke.org/documentation/README.html#REJECTING_SENDERS From: <st...@keptprivate.com> Reply-To: <qmailtoaster-list@qmailtoaster.com> Date: Sunday, October 17, 2021 at 5:52 PM To: "qmailtoaster-list@qmailtoaster.com" <qmailtoaster-list@qmailtoaster.com> Subject: Re: [qmailtoaster] Trouble with spamdyke blacklist_senders Thanks for the help. Shouldn't there be something about this in the spamdyke doc's? Steve Sent with a Spark On Oct 17, 2021, 11:40 AM -0700, Eric Broch <ebr...@whitehorsetc.com>, wrote: https://spamassassin.apache.org/full/3.4.x/doc/Mail_SpamAssassin_Conf.html On 10/17/2021 12:02 PM, st...@keptprivate.com wrote: Hi, I'm trying to blacklist multiple senders with a file formatted like: @xyz.com,@abc.net,@qrs.org but his doesn't seem to be working. I can't find any examples online or documentation covering the file format with multiple entries. Steve