UCS Mail Server is rejecting mail from one specific address and the cause seems to be Bitbone Maildisclaimer content filter that temporarily rejecting only that mail. I really don’t understand because Maildisclaimer’s work is to add a signature to mail sent from mail server, not to filter incoming mail. But this I what I can see from logs:
Mar 2 10:58:00 mailserver postfix/smtpd[5219]: connect from smtp.server.xx[xxx.xxx.xxx.xxx]
Mar 2 10:58:00 mailserver postgrey[1261]: action=pass, reason=client AWL, client_name=smtp.server.xx, client_address=xxx.xxx.xxx.xxx, sender=info@domain.xx, recipient=user@domain2.xx
Mar 2 10:58:00 mailserver postfix/smtpd[5219]: D48403DC0639: client=smtp.server.xx[xxx.xxx.xxx.xxx]
Mar 2 10:58:00 mailserver postfix/cleanup[9090]: D48403DC0639: message-id=e4167994-3f3c-25c5-a6ab-9795ae30e23b@domain.xx
Mar 2 10:58:01 mailserver postfix/qmgr[32235]: D48403DC0639: from=info@domain.xx, size=79496, nrcpt=1 (queue active)
Mar 2 10:58:01 mailserver bitbone-maildisclaimer: bitbone.disclaimers.smtp.smtp_factory INFO connecting to upstream gateway “127.0.0.1:10031”
Mar 2 10:58:01 mailserver bitbone-maildisclaimer: bitbone.smtp.esmtpd.init INFO accepted new client, from=127.0.0.1
Mar 2 10:58:01 mailserver postfix/smtpd[8558]: connect from localhost[127.0.0.1]
Mar 2 10:58:01 mailserver postfix/smtpd[8558]: 155853DC063A: client=localhost[127.0.0.1]
Mar 2 10:58:01 mailserver bitbone-maildisclaimer: bitbone.disclaimers.smtp.rewrite_message INFO handling mail from=info@domain.xx (user)
Mar 2 10:58:01 mailserver bitbone-maildisclaimer: bitbone.smtp.esmtpd_proxy.data_received ERROR bitbone.disclaimers.smtp.ContentFilter.rewrite_message failed, temporarily rejecting mail
Mar 2 10:58:01 mailserver bitbone-maildisclaimer: bitbone.smtp.esmtpd.disconnect INFO client (from=127.0.0.1) disconnecting
Mar 2 10:58:01 mailserver postfix/smtpd[8558]: lost connection after DATA (6 bytes) from localhost[127.0.0.1]
Mar 2 10:58:01 mailserver postfix/smtpd[8558]: disconnect from localhost[127.0.0.1] ehlo=1 mail=1 rcpt=1 data=0/1 commands=3/4
Mar 2 10:58:01 mailserver postfix/cleanup[8556]: 155853DC063A: message-id=<>
Mar 2 10:58:01 mailserver postfix/bounce[9151]: warning: /etc/postfix/main.cf, line 191: overriding earlier entry: myhostname=mailserver.domain2.xx
Mar 2 10:58:01 mailserver postfix/bounce[9151]: warning: /etc/postfix/main.cf, line 196: overriding earlier entry: content_filter=smtp-amavis:[127.0.0.1]:10024
Mar 2 10:58:01 mailserver postfix/smtp[8557]: D48403DC0639: to=user@domain2.xx, relay=127.0.0.1[127.0.0.1]:10030, delay=0.48, delays=0.38/0/0.04/0.05, dsn=4.4.0, status=deferred (host 127.0.0.1[127.0.0.1] said: 451 4.4.0 Requested action aborted: local error in processing (in reply to end of DATA command))
Can someone help me trying to understand why this message is rejected by Maildisclaimer Content Filter?