Buen dia listeros
Desde hace unos dias estoy presentando problemas con los correos
provenientes desde el Banco Central, especialmente de unos usuarios
que mandan los estados de cuentas hacia los economicos del mi dominio,
aunque esto no pasa con otros usuarios de ese mismo dominio que llegan
sin problemas. Mi sistema de correo esta montado en zentyal con la
combinacion postfix+postgrey+amavis+clamav+dovecot, ademas que recibo
los correos desde mi proveedor de servicios mediante un mailgateway.
Revisando los logs encuentro esto:

Dec  6 13:15:20 dc postgrey[24741]: action=pass, reason=client AWL,
client_name=unknown, client_address=10.x.x.x,
sender=SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu,
recipient=otrousuariodemidomi...@midominio.cu
Dec  6 13:15:20 dc postfix/smtpd[25719]: B8CE361A66: client=unknown[10.x.x.x]
Dec  6 13:15:20 dc postfix/cleanup[25721]: B8CE361A66: message-id=<>
Dec  6 13:15:20 dc postfix/smtpd[25722]: connect from unknown[10.x.x.x]
Dec  6 13:15:21 dc postfix/qmgr[24649]: B8CE361A66:
from=<SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu>,
size=7940, nrcpt=2 (queue active)
Dec  6 13:15:21 dc postfix/smtpd[25719]: disconnect from
unknown[10.x.x.x] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1
commands=7
Dec  6 13:15:21 dc amavis[24718]: (24718-07) ESMTP [127.0.0.1]:10024
/var/lib/amavis/amavis-20181206T130656-24718-eQDDbaXl:
<SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu> ->
<administra...@midominio.cu>,<otrousuariodemidomi...@midominio.cu>
SIZE=7940 BODY=7BIT Received: from correo.midominio.cu ([127.0.0.1])
by localhost (dc.gedic.cu [127.0.0.1]) (amavisd-new, port 10024) with
ESMTP; Thu,  6 Dec 2018 13:15:21 -0500 (CST)
Dec  6 13:15:21 dc postgrey[24741]: action=pass, reason=client AWL,
client_name=unknown, client_address=10.x.x.x,
sender=SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu,
recipient=usuariodemidomi...@midominio.cu
Dec  6 13:15:21 dc amavis[24718]: (24718-07) Checking: 1JOV-4SyYfFm
[127.0.0.1] <SRS0=Ltdx=OP=bc.gob.cu=usuariodelbanco@@miproveedor.cu>
-> <administra...@midominio.cu>,<otrousuariodemidomi...@midominio.cu>
Dec  6 13:15:21 dc amavis[24718]: (24718-07) WARN: MIME::Parser error:
part did not end with expected boundary; ; error: unexpected end of
parts before epilogue
Dec  6 13:15:21 dc postfix/smtpd[25722]: 1739661A6F: client=unknown[10.x.x.x]
Dec  6 13:15:21 dc amavis[24718]: (24718-07) Not-Delivered,
<SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu> ->
<administra...@midominio.cu>,<otrousuariodemidomi...@midominio.cu>,
quarantine 1JOV-4SyYfFm, Message-ID: ,
Dec  6 13:15:21 dc amavis[24718]: (24718-07) Hits: -
Dec  6 13:15:21 dc postfix/cleanup[25721]: 1739661A6F: message-id=<>
Dec  6 13:15:21 dc postfix/smtp[25222]: B8CE361A66:
to=<administra...@midominio.cu>, relay=127.0.0.1[127.0.0.1]:10024,
delay=0.41, delays=0.32/0/0/0.09, dsn=5.6.0, status=bounced (host
127.0.0.1[127.0.0.1] said: 554 5.6.0 Reject, id=24718-07 - BAD HEADER
(in reply to end of DATA command))
Dec  6 13:15:21 dc postfix/qmgr[24649]: 1739661A6F:
from=<SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu>,
size=7904, nrcpt=2 (queue active)
Dec  6 13:15:21 dc postfix/smtpd[25722]: disconnect from
unknown[10.x.x.x] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1
commands=7
Dec  6 13:15:21 dc postfix/smtp[25222]: B8CE361A66:
to=<otrousuariodemidomi...@midominio.cu>,
relay=127.0.0.1[127.0.0.1]:10024, delay=0.41, delays=0.32/0/0/0.09,
dsn=5.6.0, status=bounced (host 127.0.0.1[127.0.0.1] said: 554 5.6.0
Reject, id=24718-07 - BAD HEADER (in reply to end of DATA command))
Dec  6 13:15:21 dc postfix/cleanup[25721]: 29951632AD:
message-id=<20181206181521.2995163...@midominio.cu>
Dec  6 13:15:21 dc amavis[24726]: (24726-07) ESMTP [127.0.0.1]:10024
/var/lib/amavis/amavis-20181206T130659-24726-H8KH6HS8:
<SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu> ->
<administra...@midominio.cu>,<usuariodemidomi...@midominio.cu>
SIZE=7904 BODY=7BIT Received: from
Dec  6 13:15:21 dc postgrey[24741]: action=pass, reason=client AWL,
client_name=unknown, client_address=10.x.x.x,
sender=SRS0=Ltdx=OP=bc.gob.cu=usuariodelb...@miproveedor.cu,
recipient=usuariodemidomi...@midominio.cu
Dec  6 13:15:21 dc amavis[24718]: (24718-07) Checking: 1JOV-4SyYfFm
[127.0.0.1] <RS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu> ->
<administra...@midominio.cu>,<otrousuariodemidomi...@midominio.cu>
Dec  6 13:15:21 dc amavis[24718]: (24718-07) WARN: MIME::Parser error:
part did not end with expected boundary; ; error: unexpected end of
parts before epilogue
Dec  6 13:15:21 dc postfix/smtpd[25722]: 1739661A6F: client=unknown[10.x.x.x]
Dec  6 13:15:21 dc amavis[24718]: (24718-07) Not-Delivered,
<SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu> ->
<administra...@midominio.cu>,<otrousuariodemidomi...@midominio.cu>,
quarantine 1JOV-4SyYfFm, Message-ID: ,
Dec  6 13:15:21 dc amavis[24718]: (24718-07) Hits: -
Dec  6 13:15:21 dc postfix/cleanup[25721]: 1739661A6F: message-id=<>
Dec  6 13:15:21 dc postfix/smtp[25222]: B8CE361A66:
to=<administra...@midominio.cu>, relay=127.0.0.1[127.0.0.1]:10024,
delay=0.41, delays=0.32/0/0/0.09, dsn=5.6.0, status=bounced (host
127.0.0.1[127.0.0.1] said: 554 5.6.0 Reject, id=24718-07 - BAD HEADER
(in reply to end of DATA command))
Dec  6 13:15:21 dc postfix/qmgr[24649]: 1739661A6F:
from=<SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu>,
size=7904, nrcpt=2 (queue active)
Dec  6 13:15:21 dc postfix/smtpd[25722]: disconnect from
unknown[10.x.x.x] ehlo=2 starttls=1 mail=1 rcpt=1 data=1 quit=1
commands=7
Dec  6 13:15:21 dc postfix/smtp[25222]: B8CE361A66:
to=<otrousuariodemidomi...@midominio.cu>,
relay=127.0.0.1[127.0.0.1]:10024, delay=0.41, delays=0.32/0/0/0.09,
dsn=5.6.0, status=bounced (host 127.0.0.1[127.0.0.1] said: 554 5.6.0
Reject, id=24718-07 - BAD HEADER (in reply to end of DATA command))
Dec  6 13:15:21 dc postfix/cleanup[25721]: 29951632AD:
message-id=<20181206181521.2995163...@midominio.cu>
Dec  6 13:15:21 dc amavis[24726]: (24726-07) ESMTP [127.0.0.1]:10024
/var/lib/amavis/amavis-20181206T130659-24726-H8KH6HS8:
<SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu> ->
<administra...@midominio.cu>,<usuariodemidomi...@midominio.cu>
SIZE=7904 BODY=7BIT Received: from correo.midominio.cu ([127.0.0.1])
by localhost (dc.gedic.cu [127.0.0.1]) (amavisd-new, port 10024) with
ESMTP; Thu,  6 Dec 2018 13:15:21 -0500 (CST)
Dec  6 13:15:21 dc amavis[24726]: (24726-07) Checking: KcDCjgwo1Udr
[127.0.0.1] <SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu> ->
<administra...@midominio.cu>,<usuariodemidomi...@midominio.cu>
Dec  6 13:15:21 dc amavis[24726]: (24726-07) WARN: MIME::Parser error:
part did not end with expected boundary; ; error: unexpected end of
parts before epilogue
Dec  6 13:15:21 dc postfix/bounce[25724]: B8CE361A66: sender
non-delivery notification: 29951632AD
Dec  6 13:15:21 dc postfix/qmgr[24649]: 29951632AD: from=<>,
size=9998, nrcpt=1 (queue active)
Dec  6 13:15:21 dc postfix/qmgr[24649]: B8CE361A66: removed
Dec  6 13:15:21 dc amavis[24726]: (24726-07) Not-Delivered,
<SRS0=Ltdx=OP=bc.gob.cu=usuariodelba...@miproveedor.cu> ->
<administra...@midominio.cu>,<usuariodemidomi...@midominio.cu>,
quarantine KcDCjgwo1Udr, Message-ID: ,
Dec  6 13:15:21 dc amavis[24726]: (24726-07) Hits: -
Dec  6 13:15:21 dc postfix/smtp[25222]: 1739661A6F:
to=<administra...@midominio.cu>, relay=127.0.0.1[127.0.0.1]:10024,
delay=0.18, delays=0.09/0.01/0.01/0.07, dsn=5.6.0, status=bounced
(host 127.0.0.1[127.0.0.1] said: 554 5.6.0 Reject, id=24726-07 - BAD
HEADER (in reply to end of DATA command))
Dec  6 13:15:21 dc postfix/smtp[25222]: 1739661A6F:
to=<usuariodemidomi...@midominio.cu>,
relay=127.0.0.1[127.0.0.1]:10024, delay=0.18,
delays=0.09/0.01/0.01/0.07, dsn=5.6.0, status=bounced (host
127.0.0.1[127.0.0.1] said: 554 5.6.0 Reject, id=24726-07 - BAD HEADER
(in reply to end of DATA command))
Dec  6 13:15:21 dc postfix/cleanup[25721]: 4762862291:
message-id=<20181206181521.4762862...@midominio.cu>
Dec  6 13:15:21 dc postfix/bounce[25724]: 1739661A6F: sender
non-delivery notification: 4762862291

Ahi puedo deducir que hay dos problemas, uno que el header esta
malformado y que el amavis esta dando error a la hora de ver los
adjuntos del correo, alguien me puede dar un norte de como solucionar
esto?
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