Can't send emails to public domains

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ThunderKB
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Joined: Fri Aug 21, 2020 9:14 am

Can't send emails to public domains

Postby ThunderKB » Fri Aug 21, 2020 9:42 am

Hi,

There is a mail sending issue in our email server. We can't send emails to outside domains only from one email account(user3@domain.test). But we can send from other email accounts. all incoming emails are working. This issue is only for one email user. I have attached the delivery error report. Can anyone help me to resolve this issue pls..

errr.JPG
errr.JPG (57.71 KiB) Viewed 1118 times


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DualBoot
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Re: Can't send emails to public domains

Postby DualBoot » Fri Aug 21, 2020 2:33 pm

Hello,

you must verify and clean your public mail server IP.
You must check that your public server IP has a reverse DNS and your public server hostname resoved with same IP.
Also check your EHLO hostname.
And use DKIM and SPF to get better score at SPAM detection.

Regards,
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JDunphy
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Re: Can't send emails to public domains

Postby JDunphy » Fri Aug 21, 2020 10:28 pm

What dualboot said. Also follow some of the ideas from this link below

https://bridge.grumpy-troll.org/2020/07 ... erver-bcp/

HTH,

Jim
ThunderKB
Posts: 3
Joined: Fri Aug 21, 2020 9:14 am

Re: Can't send emails to public domains

Postby ThunderKB » Mon Aug 31, 2020 8:54 am

Thank you for your replies..
This issue has been resolved automatically after 7 days
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DualBoot
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Re: Can't send emails to public domains

Postby DualBoot » Mon Aug 31, 2020 10:05 am

IT'S A MIRACLLLLEEEEEEE !!!! :mrgreen:

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