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Gmail and Hotmail mail delivery error

Questions regarding the Mail Server
Dovecot, Exim, RoundCube
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4 posts • Page 1 of 1
aitorxs
Posts: 4
Joined: Wed Sep 08, 2021 6:30 am

Os: CentOS 6x
Web: nginx + php-fpm
Gmail and Hotmail mail delivery error
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Post by aitorxs » Wed Jan 26, 2022 4:29 am

Hello friends, I hope you can help me.

I have vesta installed on a vps with centos 7 configured with some tutorials from the net.

Currently I am receiving messages from any type of account but when I want to send to a gmail or hotmail account I get the error "Mail Delivery System"

I guess I'm missing some configuration to be able to send.

Do you have any idea what might be missing?

Please
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sandro
Support team
Posts: 87
Joined: Sun Aug 30, 2020 11:02 am

Os: CentOS 6x
Web: apache + nginx
Re: Gmail and Hotmail mail delivery error
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Post by sandro » Wed Jan 26, 2022 8:00 pm

You need to check the Exim logs to see what is happening.

The logs are in the /var/log/exim/mail.log file.

Was it working normally? When did you notice the error? Does it only happen with Gmail and Hotmail destinations?

All these answers you have in the Exim logs.
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aitorxs
Posts: 4
Joined: Wed Sep 08, 2021 6:30 am

Os: CentOS 6x
Web: nginx + php-fpm
Re: Gmail and Hotmail mail delivery error
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Post by aitorxs » Thu Jan 27, 2022 6:45 pm

Hello this is what I get in the main.log log

2022-01-27 13:41:07 1nD9hj-0002j9-6i <= [email protected] H=localhost (dolifac.pe) [127.0.0.1] P=esmtp S=554 id=[email protected]
2022-01-27 13:41:08 1nD9hj-0002j9-6i ** [email protected] R=dnslookup T=remote_smtp H=gmail-smtp-in.l.google.com [66.102.1.26] X=TLS1.2:ECDHE-ECDSA-AES128-GCM-SHA256:128 CV=yes: SMTP error from remote mail server after pipelined end of data: 550-5.7.1 [178.79.189.128 12] Our system has detected that this message is\n550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,\n550-5.7.1 this message has been blocked. Please visit\n550-5.7.1 https://support.google.com/mail/?p=Unso ... Error\n550 5.7.1 for more information. o3si91355wmq.36 - gsmtp
2022-01-27 13:41:08 1nD9hk-0002jG-4L <= <> R=1nD9hj-0002j9-6i U=exim P=local S=2656
2022-01-27 13:41:08 1nD9hj-0002j9-6i Completed
2022-01-27 13:41:08 1nD9hk-0002jG-4L => info <[email protected]> R=localuser T=local_delivery
2022-01-27 13:41:08 1nD9hk-0002jG-4L Completed

any idea what might be missing to configure?


It only happens with gmail and hotmail accounts. for corporate accounts I have no shipping problems
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sandro
Support team
Posts: 87
Joined: Sun Aug 30, 2020 11:02 am

Os: CentOS 6x
Web: apache + nginx
Re: Gmail and Hotmail mail delivery error
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Post by sandro » Fri Jan 28, 2022 12:19 pm

The log is indicating that your IP 178.79.189.128 12 is blacklisted by Google and probably Hotmail as well.

For you to have more information, I recommend doing a test using the mail-tester.com service.

Go to the website, send an email to the recipient informed and then click the button to check the score.

This test will show all problems with your email and especially with your email server.
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