The situation is slightly improved after re-entering email and block addresses. An email from ltsmall.com which is in my allow list came through without being marked as spam.
however, softwareadvice.com which is in my block list is still getting though.
Here is the nethserver mail log:
Feb 21 11:10:02 server rspamd[88684]: <707544>; proxy; rspamd_task_write_log: id: <1295117654.-902937994.1550765396157.JavaMail.root@sjmas03.marketo.org>, qid: <1235B41AB3AC>, ip: 199.15.215.88, from: <882-NZG-493.0.64326.0.0.60333.9.20895065@em-sj-77.mktomail.com>, (default: F (no action): [-3.13/20.00] [BAYES_HAM(-2.94){99.76%;},IP_SCORE(-1.12){ipnet: 199.15.215.0/24(-3.75), asn: 53580(-2.15), country: US(0.30);},HTML_SHORT_LINK_IMG_2(1.00){},FORGED_SENDER(0.30){reviews@softwareadvice.com;882-NZG-493.0.64326.0.0.60333.9.20895065@em-sj-77.mktomail.com;},R_DKIM_ALLOW(-0.20){softwareadvice.com:s=m2;mktroute.com:s=m1;},R_SPF_ALLOW(-0.20){+ip4:199.15.212.0/22;},MIME_GOOD(-0.10){multipart/alternative;text/plain;},ZERO_FONT(0.10){1;},MANY_INVISIBLE_PARTS(0.05){1;},HAS_LIST_UNSUB(-0.01){},MX_GOOD(-0.01){cached: em-sj-77.mktomail.com;},ASN(0.00){asn:53580, ipnet:199.15.215.0/24, country:US;},DKIM_TRACE(0.00){softwareadvice.com:+;mktroute.com:+;},DMARC_NA(0.00){softwareadvice.com;},FROM_HAS_DN(0.00){},FROM_NEQ_ENVFROM(0.00){reviews@softwareadvice.com;882-NZG-493.0.64326.0.0.60333.9.20895065@em-sj-77.mktomail.com;},HAS_REPLYTO(0.00){reviews@softwareadvice.com;},MIME_TRACE(0.00){0:+;1:+;},RCPT_COUNT_ONE(0.00){1;},RCVD_COUNT_TWO(0.00){2;},RCVD_TLS_LAST(0.00){},REPLYTO_ADDR_EQ_FROM(0.00){},SUBJECT_HAS_EXCLAIM(0.00){},TO_DN_NONE(0.00){},TO_MATCH_ENVRCPT_ALL(0.00){}]), len: 22227, time: 5451.008ms real, 25.906ms virtual, dns req: 65, digest: <e83cbb4cc403d1752cb008f817e576b7>, rcpts: <user@domain.net>, mime_rcpts: <user@domain.net> Feb 21 11:10:02 server rspamd[88684]: <707544>; proxy; rspamd_protocol_http_reply: regexp statistics: 0 pcre regexps scanned, 3 regexps matched, 181 regexps total, 94 regexps cached, 0B bytes scanned using pcre, 30.37k bytes scanned total