Check with your ISP or check your Security Suite settings to see if this is the case. As a result, some Internet service providers and Internet security applications limit communication on port 25. SMTP uses a default port of 25, but hackers often abuse this port to send spam via mass mail worms. In this article, we will review all the reasons why this problem arises, as well as possible remedies. This is a very common and recurring problem that does not depend on an update. Despite its popularity, there are many cases where users are not able to connect to Outlook on the reputable server or actively change email. Outlook has been around for some time and is one of Microsoft’s main products. What distinguishes Outlook from other email managers is that it can store notes, a calendar and even a log. Outlook is a personal information manager that is mainly used to retrieve emails and is part of the Microsoft Office suite. Update: Stop getting error messages and slow down your system with our optimization tool. Enable SMTP authentication for the POP or IMAP account.
