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Alert -An error occurred sending mail - The mail server sent an incorrect greeting: 5.7.1 < unknown - waht does this mean?

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  • Last reply by christ1

kangaroos
kangaroos
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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?

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?

Chosen solution

What is your SMTP server? What is the domain part of your email address or your email provider? What is your ISP?

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christ1
christ1
  • Top 25 Contributor
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Chosen Solution

What is your SMTP server? What is the domain part of your email address or your email provider? What is your ISP?