I am currently trying to setup a client with a bulk mailing service but their automated emails go into the spam folder, mainly because they fail DKIM.

If they communicate with me via email directly they are ok, just their automated emails seem to fail.

They are insistant that their DKIM is working correctly and are suggesting that there may be an issue with SM?

e.g.

Bad one:

X-SmarterMail-SpamAction: Low | MoveToFolder

X-SmarterMail-TotalSpamWeight: 28

X-SmarterMail-SpamDetail: 1.0 MAILING_LIST_MULTI Multiple indicators imply a widely-seen list manager

X-SmarterMail-SpamDetail: 0.0 FROM_EXCESS_BASE64 From: base64 encoded unnecessarily

X-SmarterMail-SpamDetail: 0.0 HTML_MESSAGE HTML included in message

X-SmarterMail-Spam: DMARC [skipped - DMARC Disabled]: 0, Reverse DNS Lookup [Passed]: 0, Null Sender: 0, ISpamAssassin [raw:1]: 2, SPF [Pass]: 0, DKIM [Fail]: 10, _ARC: none, SORBS - DUL: 0, HostKarma - Yellow: 0, SORBS: 0, SEM-BS: 0, SORBS - Recent: 0, BACKSCATTER: 0, Spamrats: 0, IADB: 0, MSRBL: 0, Spamhaus - ZEN: 0, Barracuda: 0, UCEProtect Level 1: 0, SORBS - NoMail: 0, SENDERSCORE: 0, SpamCop: 0, UBL: 0, UCEProtect Level 3: 0, SORBS - SMTP: 0, BONDEDSENDER: 0, GBUDB: 0, HostKarma - Blacklist: 0, UCEProtect Level 2: 0, Surriel: 0, MCAFEE: 0, SORBS - New: 0, IX: 0, SEM-BL: 0, CBL - Abuse Seat: 0, Declude: 16

They also asked why it was showing as Russian Federation in the chain because their tests don't show this?

X-Declude-Spoolname: 849786117.eml

X-Declude-RefID: 

X-Declude-Note: Scanned by Declude 4.12.11

X-Declude-Scan: Incoming Score [16] at 09:18:18 on 16 Jun 2026

X-Declude-Tests: SPFPASS [-1], FROMNOMATCH [2], FILTER-NOSENDER [5], FILTER-COUNTRY [10], WEIGHT10 [10], WEIGHT14 [14]

X-Country-Chain: RUSSIAN FEDERATION->destination

X-Declude-Code: f

Good one:

X-SmarterMail-SpamAction: None | NoAction

X-SmarterMail-TotalSpamWeight: 8

X-SmarterMail-SpamDetail: 0.1 PLING_QUERY Subject has exclamation mark and question mark

X-SmarterMail-SpamDetail: 0.0 TVD_SPACE_RATIO

X-SmarterMail-SpamDetail: 0.0 HTML_MESSAGE HTML included in message

X-SmarterMail-Spam: DMARC [skipped - DMARC Disabled]: 0, Reverse DNS Lookup [Passed]: 0, Null Sender: 0, ISpamAssassin [raw:0.1]: 0, SPF [Pass]: 0, DKIM [Pass]: 0, _ARC: none, SORBS - New: 0, CBL - Abuse Seat: 0, SENDERSCORE: 0, IADB: 0, UCEProtect Level 1: 0, MSRBL: 0, SORBS - Recent: 0, BONDEDSENDER: 0, SORBS: 0, SpamCop: 0, GBUDB: 0, IX: 0, Spamhaus - ZEN: 0, Surriel: 0, SORBS - SMTP: 0, UCEProtect Level 3: 0, MCAFEE: 0, SEM-BL: 0, SEM-BS: 0, UBL: 0, SORBS - DUL: 0, Barracuda: 0, UCEProtect Level 2: 0, SORBS - NoMail: 0, Spamrats: 0, HostKarma - Blacklist: 0, BACKSCATTER: 0, HostKarma - Yellow: 0, Declude: 8

Also i'm not sure the declude score is calculating correctly, I make 10+2-1 = 11 ?

X-Declude-Spoolname: 849786580.eml

X-Declude-RefID: 

X-Declude-Note: Scanned by Declude 4.12.11

X-Declude-Scan: Incoming Score [8] at 11:31:36 on 16 Jun 2026

X-Declude-Tests: SPFPASS [-1], FROMNOMATCH [2], FILTER-BACKSCATTER [10]

X-Country-Chain: 

X-Declude-Code: f

Any insight please?