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SMTP Error 451

This article will guide you on different methods to resolve #SMTP #error 451 which occurs due to the receiving server rejecting your email. 

This can happen for a number of reasons but most likely is due to the recipients server being overloaded with #messages.

To fix SMTP Error: Failed to connect to server:

1. Modify the #firewall rules on the server to allow outbound connections on #ports like 465.

2. Modify the SMTP restrictions on the server.

3. Edit #PHPMailer settings like Host, Port etc.

4. Correct #DNS resolution for mail server.

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VestaCP mail not working How to fix

This article will guide you on different methods to resolve #Vestacp #mail #problems which generally occurs mainly due to #Exim problem, firewall issues, and so on. This tips will resolve the #email problems in VestaCP.

To fix email not working:

1. Verify your internet connection is working. If it's not, there are four things you can do to fix it.

2. Make sure you're using the correct email server settings.

3. Confirm your password is working.

4. Confirm you don't have a security conflict caused by your firewall or antivirus #software.

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SMTP error 10051 How to resolve

This article will guide you on the causes and different methods to solve SMTP #error #10051 which occurs due to improper #SMTP authentication, ISP #firewall issues, #Antivirus on #PC, and so on. You can generally find your SMTP server address in the account or settings section of your mail client.) When you send an email, the SMTP server processes your email, decides which server to send the message to, and relays the message to that server.

To fix email not connecting to server:

1. Check your internet connection.

2. Check your SMTP server details.

3. Verify all usernames and passwords.

4. Check your SMTP server connection.

5. Change your SMTP port.

6. Control your antivirus or firewall settings.

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Exim error 53 How to fix it

This article will guide you on how to fix Exim #error #53 which occurs as a result of #database corruption or due to any server related #problems. 

If you find the following error in your EXIM logs, it means that your EXIM #databases could be corrupted.

defer (-53): retry time not reached for any host


The fix is to rebuild exim #databases. To rebuild #exim databases you can run the following commands as root:

/usr/sbin/exim_tidydb -t 1d /var/spool/exim retry > /dev/null

/usr/sbin/exim_tidydb -t 1d /var/spool/exim reject > /dev/null

/usr/sbin/exim_tidydb -t 1d /var/spool/exim wait-remote_smtp > /dev/null

/scripts/eximup --force

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PHPMailer smtp error could not authenticate

This article will guide you on how to fix PHPMailer error "smtp error: could not authenticate" which generally occurs when the application can’t establish an SMTP connection to the mail server. This is experienced when users send emails via PHPMailer using SMTP authentication.

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