What does the "error dialing remote address" bounce code mean and is it controllable?

Email marketer from Reddit responds that "dial tcp" errors are often transient and caused by temporary network congestion or the recipient server being temporarily unavailable. Retrying the message later is often the best solution.

Email marketer from StackOverflow shares that an i/o timeout generally means the client's request timed out while trying to read or write data to the server, this can be due to network issues or the server being overloaded. Often, there's little the client-side can do besides retry.

Email marketer from MXToolbox shares that to diagnose connection problems, use tools like ping or traceroute to check network connectivity. Also check the recipient server's status and if it is accepting connections.

Email marketer from Email Geeks shares that if using a service like SendGrid, there would be little control over this issue.

Email marketer from SuperUser explains that a connection timeout means that your computer tried to talk to another computer, but didn't receive a response in the expected time. This suggests a problem with network connectivity or the remote server's responsiveness.

Email marketer from EmailOnAcid recommends monitoring your sender reputation, ensuring your IP is not blacklisted, and properly configuring SPF, DKIM and DMARC records for sender authentication.

Email marketer from Reddit suggests warming up your IP address gradually to establish a good sender reputation. Avoid sending large volumes of email from a new IP, as this can trigger spam filters and lead to connection issues.

Email marketer from GMass responds to check if your email content is triggering spam filters. Avoid using spam trigger words, ensure a good email-to-text ratio, and personalize your messages to improve deliverability.

Email marketer from DNSQueries shares that if you have issues, ensure your DNS records (MX, SPF, DKIM, DMARC) are correctly configured. Incorrect DNS settings can cause email delivery problems, including connection timeouts.

Email marketer from DigitalOcean shares to check your firewall settings to allow outgoing SMTP traffic (port 25, 587, or 465). Incorrectly configured firewalls can block connections and cause timeout errors.

Expert from Email Geeks explains that the "error dialing remote address" bounce code means the SMTP client failed to establish a connection with the remote host, likely due to a TCP connection timeout.

Expert from Email Geeks explains Sendgrid probably has no control over the i/o timeout, as it is a protocol-level issue.

Expert from Spam Resource explains that a connection timeout error often means there's a problem reaching the recipient's mail server, due to network issues or the server being unavailable. They suggest checking the recipient's server and your own network configuration.

Expert from Word to the Wise shares that deferrals (temporary delivery failures) can be caused by temporary network issues or the receiving server being too busy to accept connections. This can result in timeout errors.

Documentation from Microsoft explains that if Exchange Online has trouble connecting to a recipient server, it could be due to network problems, firewall issues, or the recipient server being offline. These issues are usually external to Exchange Online.

Documentation from Cisco explains to use the `traceroute` command to identify where network connections are failing. This can help pinpoint if the issue is on your network, the recipient's network, or somewhere in between.

Documentation from Exim Wiki explains that "error dialing remote address: dial tcp ... i/o timeout" indicates a failure to establish a TCP connection with the remote host due to a timeout. This is usually a network issue, not a problem with Exim itself.

Documentation from Postfix.org explains that connection refused or timeout errors indicate problems reaching the destination server. These are external network issues or server problems, not generally issues with your Postfix setup.

Documentation from RFC 5321 states that temporary SMTP errors (4xx codes) often signify transient problems like network congestion or a temporary lack of resources on the receiving server. These errors usually warrant retrying the message later.