From: "Peter Moylan" Received: from [192.168.100.201] (HELO mail.2rosenthals.com) by 2rosenthals.com (CommuniGate Pro SMTP 5.4.10) with ESMTP id 12900635 for ecs-isp@2rosenthals.com; Wed, 23 Apr 2025 21:47:09 -0400 Received: from [192.168.200.201] (port=45576 helo=mail2.2rosenthals.com) by mail.2rosenthals.com with esmtp (Exim 4.97.1) (envelope-from ) id 1u7lg4-000000002fJ-1I2q for ecs-isp@2rosenthals.com; Wed, 23 Apr 2025 21:47:02 -0400 Received: from pmoylan.org ([144.6.37.71]:60662 helo=mail.pmoylan.org) by mail2.2rosenthals.com with esmtp (Exim 4.97.1) (envelope-from ) id 1u7lft-000000006vp-0W5l for ecs-isp@2rosenthals.com; Wed, 23 Apr 2025 21:46:51 -0400 X-SASI-Hits: BODYTEXTP_SIZE_3000_LESS 0.000000, BODY_ENDS_IN_URL 0.000000, BODY_SIZE_1000_LESS 0.000000, BODY_SIZE_2000_LESS 0.000000, BODY_SIZE_5000_LESS 0.000000, BODY_SIZE_7000_LESS 0.000000, BODY_SIZE_900_999 0.000000, CTE_7BIT 0.000000, DKIM_ALIGNS 0.000000, DKIM_SIGNATURE 0.000000, HTML_00_01 0.050000, HTML_00_10 0.050000, IN_REP_TO 0.000000, KNOWN_MSGID 0.000000, LEGITIMATE_SIGNS 0.000000, MSG_THREAD 0.000000, NO_URI_HTTPS 0.000000, REFERENCES 0.000000, SENDER_NO_AUTH 0.000000, SINGLE_URI_IN_BODY 0.000000, SUSP_DH_NEG 0.000000, TO_IN_SUBJECT 0.500000, USER_AGENT 0.000000, __ANY_URI 0.000000, __BODY_NO_MAILTO 0.000000, __BOUNCE_CHALLENGE_SUBJ 0.000000, __BOUNCE_NDR_SUBJ_EXEMPT 0.000000, __COURIER_PHRASE 0.000000, __CP_URI_IN_BODY 0.000000, __CT 0.000000, __CTE 0.000000, __CT_TEXT_PLAIN 0.000000, __DKIM_ALIGNS_1 0.000000, __DKIM_ALIGNS_2 0.000000, __DQ_NEG_DOMAIN 0.000000, __DQ_NEG_HEUR 0.000000, __DQ_NEG_IP 0.000000, __FORWARDED_MSG 0.000000, __FUR_HEADER 0.000000, __FW_1LN_BOT_MSGID 0.000000, __HAS_FROM 0.000000, __HAS_MSGID 0.000000, __HAS_REFERENCES 0.000000, __HEADER_ORDER_FROM 0.000000, __IN_REP_TO 0.000000, __MAIL_CHAIN 0.000000, __MIME_BOUND_CHARSET 0.000000, __MIME_TEXT_ONLY 0.000000, __MIME_TEXT_P 0.000000, __MIME_TEXT_P1 0.000000, __MIME_VERSION 0.000000, __MOZILLA_MSGID 0.000000, __MOZILLA_USER_AGENT 0.000000, __NO_HTML_TAG_RAW 0.000000, __PHISH_SPEAR_SUBJ_SUBJECT 0.000000, __RCVD_FROM_DOMAIN 0.000000, __REFERENCES 0.000000, __SANE_MSGID 0.000000, __SCAN_D_NEG 0.000000, __SCAN_D_NEG2 0.000000, __SCAN_D_NEG_HEUR 0.000000, __SCAN_D_NEG_HEUR2 0.000000, __SINGLE_URI_TEXT 0.000000, __SUBJ_ALPHA_END 0.000000, __SUBJ_ALPHA_NEGATE 0.000000, __SUBJ_REPLY 0.000000, __TO_IN_SUBJECT 0.000000, __TO_MALFORMED_2 0.000000, __TO_NAME 0.000000, __TO_NAME_DIFF_FROM_ACC 0.000000, __TO_REAL_NAMES 0.000000, __URI_IN_BODY 0.000000, __URI_MAILTO 0.000000, __URI_NOT_IMG 0.000000, __URI_NO_PATH 0.000000, __URI_NS 0.000000, __URI_WITHOUT_PATH 0.000000, __USER_AGENT 0.000000 X-SASI-Probability: 9% X-SASI-RCODE: 200 X-SASI-Version: Antispam-Engine: 5.1.4, AntispamData: 2025.4.24.5728 X-SASI-Hits: BODYTEXTP_SIZE_3000_LESS 0.000000, BODY_ENDS_IN_URL 0.000000, BODY_SIZE_1000_LESS 0.000000, BODY_SIZE_2000_LESS 0.000000, BODY_SIZE_5000_LESS 0.000000, BODY_SIZE_7000_LESS 0.000000, BODY_SIZE_900_999 0.000000, CTE_7BIT 0.000000, DKIM_ALIGNS 0.000000, DKIM_SIGNATURE 0.000000, HTML_00_01 0.050000, HTML_00_10 0.050000, IN_REP_TO 0.000000, KNOWN_MSGID 0.000000, LEGITIMATE_SIGNS 0.000000, MSG_THREAD 0.000000, NO_URI_HTTPS 0.000000, REFERENCES 0.000000, SENDER_NO_AUTH 0.000000, SINGLE_URI_IN_BODY 0.000000, SUSP_DH_NEG 0.000000, TO_IN_SUBJECT 0.500000, USER_AGENT 0.000000, __ANY_URI 0.000000, __BODY_NO_MAILTO 0.000000, __BOUNCE_CHALLENGE_SUBJ 0.000000, __BOUNCE_NDR_SUBJ_EXEMPT 0.000000, __COURIER_PHRASE 0.000000, __CP_URI_IN_BODY 0.000000, __CT 0.000000, __CTE 0.000000, __CT_TEXT_PLAIN 0.000000, __DKIM_ALIGNS_1 0.000000, __DKIM_ALIGNS_2 0.000000, __DQ_NEG_DOMAIN 0.000000, __DQ_NEG_HEUR 0.000000, __DQ_NEG_IP 0.000000, __FORWARDED_MSG 0.000000, __FUR_HEADER 0.000000, __FW_1LN_BOT_MSGID 0.000000, __HAS_FROM 0.000000, __HAS_MSGID 0.000000, __HAS_REFERENCES 0.000000, __HEADER_ORDER_FROM 0.000000, __IN_REP_TO 0.000000, __MAIL_CHAIN 0.000000, __MIME_BOUND_CHARSET 0.000000, __MIME_TEXT_ONLY 0.000000, __MIME_TEXT_P 0.000000, __MIME_TEXT_P1 0.000000, __MIME_VERSION 0.000000, __MOZILLA_MSGID 0.000000, __MOZILLA_USER_AGENT 0.000000, __NO_HTML_TAG_RAW 0.000000, __PHISH_SPEAR_SUBJ_SUBJECT 0.000000, __RCVD_FROM_DOMAIN 0.000000, __REFERENCES 0.000000, __SANE_MSGID 0.000000, __SCAN_D_NEG 0.000000, __SCAN_D_NEG2 0.000000, __SCAN_D_NEG_HEUR 0.000000, __SCAN_D_NEG_HEUR2 0.000000, __SINGLE_URI_TEXT 0.000000, __SUBJ_ALPHA_END 0.000000, __SUBJ_ALPHA_NEGATE 0.000000, __SUBJ_REPLY 0.000000, __TO_IN_SUBJECT 0.000000, __TO_MALFORMED_2 0.000000, __TO_NAME 0.000000, __TO_NAME_DIFF_FROM_ACC 0.000000, __TO_REAL_NAMES 0.000000, __URI_IN_BODY 0.000000, __URI_MAILTO 0.000000, __URI_NOT_IMG 0.000000, __URI_NO_PATH 0.000000, __URI_NS 0.000000, __URI_WITHOUT_PATH 0.000000, __USER_AGENT 0.000000 X-SASI-Probability: 9% X-SASI-RCODE: 200 X-SASI-Version: Antispam-Engine: 5.1.4, AntispamData: 2025.4.24.5728 DKIM-Signature: v=1; q=dns/txt; a=rsa-sha256; c=relaxed/relaxed; s=default; d=pmoylan.org; bh=gRaielCJQ2bS+FLBcNvykgNPJKwzvJp0KGqo5BvO9ng=; h=From:To:Date:Message-ID; b=cXFCv+D9hoG6jLgwWJqb2LjBBUalz4NmTw3MCoKpAjJRorwgi3dxtMEem3JMJ46KlRGEx yAkePsfKMXtwymOGmPwkwAW8YtdOWv0zm7FEGe8j+hOmdU7qGxHLGjplKvLOtSvsCSscXKe B4TjfLwUzUZAeJD8fEJuEl4vVhaBYts= Received: from [192.168.20.3] (peter.pmoylan.org [192.168.20.3]) by mail.pmoylan.org (Weasel v3.03) for ; Thu, 24 Apr 2025 11:46:42 +1000 Subject: Re: [eCS-ISP] Trouble getting mail delivered to Office365 (outlook.com), ProofPoint, and Barracuda protected domains To: eCS ISP Mailing List References: Message-ID: <68099801.70902@pmoylan.org> Date: Thu, 24 Apr 2025 11:46:41 +1000 User-Agent: Mozilla/5.0 (OS/2; Warp 4.5; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit On 24/04/25 10:18, Peter Moylan wrote: > > The big problem, I suspect, is that some big mail services might be > adopting a "silently reject" policy, simply discarding mail they > don't like instead of returning a failure reply. My choir uses a > Yahoo mail account (against my advice), and a problem we had was > that messages to all members went only to some members, and we were > never notified about the failures. I'm no longer on the choir > organising committee, so I don't know whether they are still doing > it. You might be asking "why were there delivery failures?". In that case it was because Yahoo mail was (and possibly still is) a major source of spam, so it was often blacklisted. Because of this, Yahoo adopted a policy of not telling senders when their mail wasn't deiivered. The 2rosenthals server is not blacklisted, but it could be on someone's private blacklist. -- Peter Moylan peter@pmoylan.org http://www.pmoylan.org