I get the activation email OK, but when emailing invoices I get the same error: (Clutter is disabled on my account) I have reconfirmed all the settings in the smtp screen. Today, we saw how our Support Engineers fixed Postfix related errors.I too am having the same issue as of last night. In short, an error like postfix error mail transport unavailable can occur due to the bad settings in the Postfix configuration file. On checking, our Support Engineers found the customer had set up as below, $ -d solved the error. It delivers mails from the server to Thunderbird on IMAP or POP3 Protocol. This is because Dovecot is responsible for receiving emails from the server to the local systems. Often, problems with emails receiving may happen due to bad Dovecot settings on the server. Postfix status=deferred (mail transport unavailable) Similarly, another customer had a problem while receiving emails after setting up Postfix and Dovecot on his ISPConfig server. The Postfix mail settings on the Plesk server appear as:įinally, we restart the service. If so, they will be added to mynetworks section. # postconf mynetworksĪgain, we white-listed IP addresses in Plesk > Tools & Settings > Mail Server Settings > White List tab. For Plesk versions above 12.0, the mynetworks variable should be empty. In addition, to be able to connect, smtp_bind_address needs to be defined as mentioned in the mynetworks section. grep "smtp_bind_address" /etc/postfix/master.cf Then, we check the /etc/postfix/master.cf where the s dd_transport_maps are defined in the first column of smtp_bind_address option. postmap -s /var/spool/postfix/plesk/sdd_transport_maps And, while running the below command, we can see the settings too. So, this can be edited via Tools & Settings > Mail Server Settings. Therefore, the wrong Transport setting may create the above error. Postfix/qmgr: warning: connect to transport private/XXX.XX.X.XX-: Connection refused While checking the mail log in /var/log/maillog, we can see the following error. Likewise, several Plesk server owners complain that their email messages are stuck in the mail queue leading to loads of undelivered outgoing emails on the Plesk server. Otherwise, postfix doesn’t update an existing one. In addition, whenever we change files in /etc/postfix, it may always run postmapon the file to update it. Also, we make sure the given settings in the Postfix configuration are correct or not. So, we changed no_unknown_recipient_check to no_unknown_recipient_checks and solved the problem. So, the typo error caused a misconfiguration in the Postfix file and blocked the proper working. Here, our customer had mistakenly set up as no_unknown_recipient_check in the /etc/postfix/master.cf file instead of “no_unknown_recipient_checks”. On checking /var/log/mail.log, our Support Engineers found a misconfiguration in master.cf configuration file. Postfix/qmgr: warning: connect to transport private/amavis: Connection refusedĭsn=4.3.0, status=deferred (mail transport unavailable) When he tried to start the postfix the following warning appears. Recently, one of our customers had a problem with a recently configured postfix MTA. Now, let’s see the major reasons for this Postfix related errors and how our Support Engineers fix the top errors. The top reason for this error is the misconfiguration of Postfix.įixes for Postfix error mail transport unavailableĪt Bobcares, where we have more than a decade of expertise in managing servers, we see many customers face problems while managing the Postfix mail server. Also, it acts as a Mail Transfer Agent that transfers mails from the server to other servers, on SMTP Protocol.įrequently, the postfix customers may face errors like mail transport unavailable while managing Postfix mail servers. Thanks to the Postfix mail server which is a reliable mail server for your business needs. In the business world, there has been a growing need for a Linux mail server. The top reason for Postfix error mail transport unavailable Today, let’s get into the details and see how our Support Engineers fix postfix errors like mail transport unavailable. Mail transport unavailable error mainly happens due to a bad setting in the Postfix configuration file.Īt Bobcares, we often get requests to fix postfix errors as part of our Server Management Services. One of the typical postfix errors which creates a problem for many of our customers. There are lots of undelivered outgoing emails in my server and I see an error message as Postfix error mail transport unavailable!.
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