Unable to send because of a wrong SMTP response

Question: When I start sending I receive a wrong SMTP response from my SMTP server that the server may no longer accept connections from IP addresses which have no reverse-DNS (PTR record) assigned. What is the problem?

Brief Answer: You are outside of your ISP's network or your ISP restricts you in sending

Answer: Usually it means you are trying to send email messages through your ISP's email account from an external network not being a part of your ISP's network. You are connected to another ISP in short. Most of ISPs do not allow to use their SMTP servers for external Internet users connected to other ISPs. Another reason is that your ISP limits you in sending or provides you with a web-based email access only. Possibly it requires you to use a fixed IP address tied to an Internet domain. In this case you need to buy a domain such as mybestdomain.com and a fixed IP address from your ISP and then tie the domain to the IP address using the domain administration tool you will receive upon buying the domain. Please, read about other typical problems with sending to get more information regarding this issue. Please, give your ISP a call to find out the real reason of the problem. Problems with sending are not connected with quality of Fast Mailer Pro, they are problems of your SMTP account or SMTP settings actually.

Back to Questions and Answers Related to Fast Mailer Pro | Home Page

Security Tools - password and security tools to protect PC

1st Security Agent - protect and secure Windows PC

Security Administrator - protect PC and restrict access

Public PC Desktop - setup public access PC

1st Network Admin - secure network PC

Internet Tools - email and Internet tools, SMTP servers and mass mailers

1st Mac Mailer - use mac for mass mailing

SMTP Relay Server - relay email messages

Mail Bomber - organize email subscription

Best Mail Server - SMTP/POP3 mail server software

Corporate SMTP Server - high-performance mail server

Website Map - links to different useful pages of this website

Home Page - our home page with the full list of our software

Products - the full list of our software with detailed descriptions

Contact Us - web form you can use to contact us

1st Security Agent FAQ - questions and answers related to 1st Security Agent

Security Administrator FAQ - questions and answers related to Security Administrator

Mail Bomber FAQ - questions and answers related to Mail Bomber

Fast Mailer Pro FAQ - questions and answers related to Fast Mailer Pro

Local SMTP Relay Server FAQ - questions and answers related to Local SMTP Relay Server

Email Security FAQ - questions and answers related to Email Security

1st Evidence Remover FAQ - questions and answers related to 1st Evidence Remover

Public PC Desktop FAQ - questions and answers related to Public PC Desktop

Sales Related FAQ - sales related questions and answers

Antispam Policy - our antispam policy

Privacy Policy - our privacy policy

Site Map

Fast Mailer Pro FAQ - Unable to send because of a wrong SMTP response