I dont know why, returned mail

[mrbs21]

Hello forum that happens. anyone can help me with this error. someone has had this error?

<user@nokia.xx>: host mx1.nokia.xx[xx.100.105.xx] said: 403
4.7.0 encryption too weak 0 less than 168 (in reply to MAIL FROM command)

how I can solve. I need to send mail, but is coming back to me everyone. not before this happened.


Thanks a lot!

[phoenix]

You can have a look at some of the results of a search: +"4.7.0 encryption too weak" - Yahoo! Search Results

[mrbs21]

I phoenix thanks! so

I tried to find something in google but I did not find information to zimbra, I'd like to know if someone before had this kind of problem.

I am a little concerned about this.

Thanks.

[phoenix]

There are several threads in the link I gave you that cover this problem, have a read of them. This isn't a Zimbra specific problem it's a posttfix problem and Zimbra uses Postfix as it's MTA.