προβλημα με micorosoft exchange

[takaros1982]

Καλημέρα.

θα ήθελα την βοήθεια σας.

Στην εταιρεία έχουμε ενα Windows SBS 2008 και εγκατεστημένο ένα Microsoft exchange server 2007.

Έρχονται και φεύγουν email κανονικα. Εκτός απο μερικούς παραλήπτες που βγάζει το παρακάτω μύνημα:

 

Subject: Returned mail: see transcript for details

 

 

----- The following addresses had permanent fatal errors ----- <[email protected]> (*παραληπτης)

(reason: 550-Verification failed for <[email protected]>)(*αποστολέας)

 

----- Transcript of session follows ----- ... while talking to mail.domain1.gr.:

>>> DATA

<<< 550-Verification failed for <[email protected]> <<< 550-The mail server could not deliver mail to <[email protected]>. The account or domain may not exist, they may be blacklisted, or missing the proper dns entries.

<<< 550 Sender verify failed

550 5.1.1 <[email protected]>... User unknown <<< 503-All RCPT commands were rejected with this error:

<<< 503-Sender verify failed

<<< 503 Valid RCPT command must precede DATA

 

 

Ευχαριστώ