Alert -An error occurred sending mail - The mail server sent an incorrect greeting: 5.7.1 < unknown - waht does this mean?
When using Mozilla Thunderbird - when I try to send out Emails the following occurs;
"ALERT"
An error occurred sending mail. The mail server sent an incorrect greeting: 5.7.1 < unknown [14.137.73.189] > client host rejected: Access denied.
Why I have been able to send Emails to specific Email addresses - but now, for some reason I do not understand - I cannot.
How do I fix this problem?
Gekose oplossing
What is your SMTP server? What is the domain part of your email address or your email provider? What is your ISP?
Lees dié antwoord in konteks 👍 0All Replies (1)
Gekose oplossing
What is your SMTP server? What is the domain part of your email address or your email provider? What is your ISP?