Hello, can i use let's encrypt for postfix?

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Port 587 is probably being used by Postfix, as the "submission" port 587 is for SMTP, which Postfix is designed to handle. Personally I don't use Dovecot for port 587, as Postfix is already doing its job there. I'm not familiar with the Dovecot submission daemon, but I don't think it's useful to have both Dovecot as well as Postfix doing the same SMTP job. I use Dovecot as IMAP daemon only.

Is the Dovecot submission daemon enabled by default or are you just enabling everything without thinking? Serious question.

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Well i just want an imap/pop3 server, for the time postfix seems to be well encrypted, i just have a 554 5.7.1 relay access denied to sent out of my server postfix.
I make a little break because i have done a great job.

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I'm considered like a spammer by gmail but sending e-mails works!!!! i'm proud of it!
the only thing i do is to add relayhost = [mail.myisp.fr]:465 and that's enough.
Now i have to install dovecot.

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You might already know that you may be able to get a better antispam treatment by making sure that you have MX and reverse DNS records, as well as SPF and DKIM set up properly. Hopefully that will start to persuade Gmail that you're serious about operating a mail server and not likely to be impersonated by other people.

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i can't do reverse DNS for this time but i keep in mind your suggestion, thanks.

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During configuration of postfix i made too many mistakes so i've been blacklisted, my registrar ask to unlock me. That's why i'm like a spammer. I hope the support is efficient. Thanks

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You should also periodically review your outbound SMTP IP(s) at:
MultiRBL.valli.org - Results of the query 185.98.131.25

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Thank you so much, i have moved the mail service on my own server so i made a query with my domain name with this tool, i hope the black list will remove my domain like my registar ask. It's my fault, i made many mistakes with postfix before it was ready, i'm a noob in coding :smiley:

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You should also check periodically review your outbound SMTP domain(s) at:
MultiRBL.valli.org - Results of the query logic-immo.site

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Done :wink:

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Now my server is up, apache, postfix, dovecot uses letsencrypt! I have a better note of my mail server look at this ; Spam Test Result
I have learned so much ! thanks to the opensources softwares.

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Congratulations on your test result! Mail servers have a lot of moving parts. Just a bit off topic here but check out this resource... It may add to your confidence.
Good Luck and don't forget @rg305's suggestion about the MultiRBL checks. You'd be surprised to know how many sites end up on one! :shushing_face:

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Thank you for this link. :wink:

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Using your own ISPs mailserver as a relay should prevent a lot of that trouble though.

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You reassure me Osiris thanks. :slight_smile:

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