Jul 14 20:39:17 mail postfix/smtpd: fatal: no SASL authentication mechanisms Jul 14 20:39:17 mail postfix/smtpd: warning: SASL: Connect to private/auth failed: Connection refused Jul 14 20:39:17 mail postfix/smtpd: connect from .com Jul 14 20:39:17 mail postfix/smtpd: warning: TLS library problem: error:140DC002:SSL routines:use_certificate_chain_file:system lib./ssl/ssl_rsa.c:615: Jul 14 20:39:17 mail postfix/smtpd: warning: TLS library problem: error:20074002:BIO routines:file_ctrl:system lib./crypto/bio/bss_file.c:290: Jul 14 20:39:17 mail postfix/smtpd: warning: TLS library problem: error:02001002:system library:fopen:No such file or directory./crypto/bio/bss_file.c:288:fopen('/etc/letsencrypt/live//fullchain.pem','r'): Jul 14 20:39:17 mail postfix/smtpd: warning: cannot get RSA certificate from file "/etc/letsencrypt/live//fullchain.pem": disabling TLS support Jul 14 20:39:17 mail postfix/postscreen: WHITELISTED :22875 Jul 14 20:39:17 mail postfix/postscreen: CONNECT from :22875 to :25 Jul 14 20:37:52 mail postfix/master: warning: /usr/lib/postfix/sbin/smtpd: bad command startup - throttling Jul 14 20:37:52 mail postfix/master: warning: process /usr/lib/postfix/sbin/smtpd pid 192561 exit status 1 Jul 14 20:37:51 mail postfix/smtpd: fatal: no SASL authentication mechanisms Thank you very much.īeta Was this translation helpful? Give feedback. Set ssh_dh=is the error I am getting from the log Jul 11 12:16:04 mail dovecot: imap-login: Error: Diffie-Hellman key exchange requested, but no DH parameters provided. This time however, I am having all kind of trouble fixing it. My assumption is that the issue is related to the Let's Encrypt SSL certificate because I had the issue once before after I reinstalled Let's Encrypt due to a change on their website. This started to occur after I added more domains to modoboa. I've been getting an issue lately to send out emails. So verify that your firewall or antivirus are not blocking it, setting up a proper exception rule.First and foremost, thank you very much for this wonderful tool and everything you guys do. Sometimes an outgoing mail server can conflict with the computer’s protection systems. Control your antivirus or firewall settings.You can use then port 587 or 465 for more information read our article about SMTP ports. The outgoing mail server uses normally port 25, but some ISPs may block it due to the increasing spam traffic that’s been passing through it. Here’s a list of all the SMTP error codes to get your bearings and remember again that using a professional outgoing server this won’t happen again. Now this is trickier: even if your SMTP details are correct, the server itself can be down or not functioning for some reason. Another small mistake that happens usually, so doublecheck your login details. To find out yours, please refer to our list of the most common ones or ask directly your provider. This is an extremely common mistake: you have set up your mail client with the wrong SMTP parameters. So first of all, be sure that you’re connected to the internet! That is why it’s always better to rely on a professional SMTP Relay Server, even if you don’t have big mailing needs: for instance turboSMTP offers a handy free plan of 6.000 emails/month, lifetime.Īnd here’s a checklist to understand why you’re unable to send emails and troubleshoot any major problem: If you can’t send your emails, the problem is very likely (but not exclusively) related to your SMTP server – the server taking care of the whole email delivery process. You open your favorite mail client or software (Mozilla Thunderbird, Outlook Express, SendBlaster…), write a few lines, insert the recipients’ addresses, click “Send” and… An error is returned. Sometimes it happens: you simply cannot send emails.
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