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Con cuentas gmail y hotmail no suele haber problemas,
Entonces cuando alguien se ha registrado con una cuenta de los dominios afectados no ha recibido el e-mail, por eso es mejor recibirlo con una cuenta aunque sea de Gmail
En concreto los dominios afectados eran y son:
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vivaldi.net smtp:[smtp.gmail.com]:587
gmx.com smtp:[smtp.gmail.com]:587
gmx.es smtp:[smtp.gmail.com]:587
INTERCABLE.NET smtp:[smtp.gmail.com]:587
proton.me smtp:[smtp.gmail.com]:587
centrum.cz smtp:[smtp.gmail.com]:587
zohomail.com smtp:[smtp.gmail.com]:587
protonmail.com smtp:[smtp.gmail.com]:587
coop5.com.ar smtp:[smtp.gmail.com]:587
linuxmail.org smtp:[smtp.gmail.com]:587
mailfence.com smtp:[smtp.gmail.com]:587
gmx.us smtp:[smtp.gmail.com]:587
yzmanager.com smtp:[smtp.gmail.com]:587
wanadoo.es smtp:[smtp.gmail.com]:587
dr.com smtp:[smtp.gmail.com]:587
mail.com smtp:[smtp.gmail.com]:587
gmx.de smtp:[smtp.gmail.com]:587
sbcglobal.net smtp:[smtp.gmail.com]:587
gmx.com smtp:[smtp.gmail.com]:587
gmx.es smtp:[smtp.gmail.com]:587
INTERCABLE.NET smtp:[smtp.gmail.com]:587
proton.me smtp:[smtp.gmail.com]:587
centrum.cz smtp:[smtp.gmail.com]:587
zohomail.com smtp:[smtp.gmail.com]:587
protonmail.com smtp:[smtp.gmail.com]:587
coop5.com.ar smtp:[smtp.gmail.com]:587
linuxmail.org smtp:[smtp.gmail.com]:587
mailfence.com smtp:[smtp.gmail.com]:587
gmx.us smtp:[smtp.gmail.com]:587
yzmanager.com smtp:[smtp.gmail.com]:587
wanadoo.es smtp:[smtp.gmail.com]:587
dr.com smtp:[smtp.gmail.com]:587
mail.com smtp:[smtp.gmail.com]:587
gmx.de smtp:[smtp.gmail.com]:587
sbcglobal.net smtp:[smtp.gmail.com]:587
Por si alguien le interesa cómo lo he solucionado pues con la opción de Postfix mapping
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hash:/etc/postfix/transport
Así ya no habrá más Mail Queue (No mail messages are currently queued for delivery)
La config en postfix/main.cf
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transport_maps = hash:/etc/postfix/transport
relayhost =
relayhost =
También se puede hacer con:
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relayhost =
smtp_fallback_relay = [smtp.gmail.com]:587
smtp_fallback_relay = [smtp.gmail.com]:587
Y usar config gmail de doble verificación para poder usar una contraseña de app y añadirlo a postfix (servidor de correo)
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smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
Ejemplos de errores:
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host mxi-1.vivaldi.net[31.209.137.13] said: 450
4.7.25 Client host rejected: cannot find your hostname, [XXXX]
(in reply to RCPT TO command)
4.7.25 Client host rejected: cannot find your hostname, [XXXX]
(in reply to RCPT TO command)
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host mail.protonmail.ch[176.119.200.128] said: 550
5.6.0 Message rejected due to potential violation of our ToS by the
recipient (in reply to end of DATA command)
5.6.0 Message rejected due to potential violation of our ToS by the
recipient (in reply to end of DATA command)
Gmail normalmente lo acepta, pero no siempre:
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orig_to=<el-brujo@elhacker.net>, relay=gmail-smtp-in.l.google.com[66.102.1.26]:25, delay=0.49, delays=0.06/0.01/0.22/0.21, dsn=5.7.25, status=bounced (host gmail-smtp-in.l.google.com[66.102.1.26] said: 550-5.7.25 [XXX] The IP address sending this message does not have a 550-5.7.25 PTR record setup, or the corresponding forward DNS entry does not 550-5.7.25 match the sending IP. As a policy, Gmail does not accept messages 550-5.7.25 from IPs with missing PTR records. For more information, go to 550-5.7.25 https://support.google.com/a?p=sender-guidelines-ip 550-5.7.25 To learn more about Gmail requirements for bulk senders, visit 550 5.7.25 https://support.google.com/a?p=sender-guidelines. ffacd0b85a97d-427ea5b398bsi5882784f8f.226 - gsmtp (in reply to end of DATA command))
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gmx.com>, relay=mx00.gmx.net[212.227.15.10]:25, delay=264940, delays=264940/0.02/0.23/0, dsn=4.0.0, status=deferred (host mx00.gmx.net[212.227.15.10] refused to talk to me: 554-gmx.net (mxgmx008) Nemesis ESMTP Service not available 554-No SMTP service 554-Bad DNS PTR resource record. 554 For explanation visit https://postmaster.gmx.net/en/case?c=r0601
