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Invalid response code received from server

P

pixel

Guest
hello


some users if tried to send an email to one domain (testdomain.com) through webmail
they got this error

There was an error sending your message: unable to add recipient [[email protected]]: Invalid response code received from server


please help
 
This is not an announcement, if your looking for help please post in the correct spot.
 
please help me i'm getting below msg when try to send mail through Webmail (Horde).

There was an error sending your message: unable to add recipient [[email protected]]: Invalid response code received from server
 
unable to add recipient [[email protected]]: Invalid response code received from server
I used Plesk 9.0.1
Horde imp-h3-4.1.6 how can I fix this error?

Logs in TMP Folder

an 09 11:03:04 HORDE [error] [imp] unable to add recipient [[email protected]]: Invalid response code received from server [on line 1059 of "C:\inetpub\vhosts\webmail\horde\imp\compose.php"]
 
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