We have run Listserv (Windows) behind a spam filter for many years. We receive notifications of all spam to the lists which has not be bad. We have approximately 50 lists with max several hundred subscribers and only one or two get much spam. Our lists are closed with subscriber approval which may help too. If nothing else, have the spam filters check SPF to prevent spoofing and skip any rules based detection. -- William Brown WNYRIC/Erie 1 BOCES From: LISTSERV Site Administrators' Forum <[log in to unmask]> On Behalf Of Shinn Wu Sent: Thursday, March 9, 2023 11:08 AM To: [log in to unmask] Subject: Block key words? ******** This email originated from outside of the organization. Use caution when replying, opening attachment(s), and/or clicking on URL's. ******** Hello, We use Listserv 17.0 in RedHat. We had three incidents of 'phantom approval' this year and I had to ask the not aware editors to change the webmail settings. I tried to use procmailrc to block the keywords. It worked on the regular account on the same server but not the listserv account. I thought that it might be aliases take precedence of procmailrc. We do not want to use a spam filter because it would cause some false-positive. Any insight suggestion to block some keywords (e.g., bitcoin, BTC wallet, and BTC address) from incoming post request? Thank you, Shinn ________________________________ To unsubscribe from the LSTSRV-L list, click the following link: http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTSRV-L&A=1 Confidentiality Notice: This electronic message and any attachments may contain confidential or privileged information, and is intended only for the individual or entity identified above as the addressee. If you are not the addressee (or the employee or agent responsible to deliver it to the addressee), or if this message has been addressed to you in error, you are hereby notified that you may not copy, forward, disclose or use any part of this message or any attachments. Please notify the sender immediately by return e-mail or telephone and delete this message from your system. ############################ To unsubscribe from the LSTSRV-L list: write to: mailto:[log in to unmask] or click the following link: http://peach.ease.lsoft.com/scripts/wa-PEACH.exe?SUBED1=LSTSRV-L&A=1