#135 new
larrycz

EHLO "unknown argument" with Exchange IMAP

Reported by larrycz | May 30th, 2011 @ 10:06 PM

MailMate version: 1.1.2 (2089)

Server: Exchange 2010

Symptom: EHLO/HELO command fails when sending email - email will not be sent

SMTP configuration: mail.myspideroffice.com, SSL required, port 587 (auto-detected correctly)

Note: This account is fully working in Apple Mail and Outlook using the same settings.

Activity Viewer output:

Clearing connection to mail.myspideroffice.com
Trying to connect to mail.myspideroffice.com on port 587
Successful connection.
S: 220 myspideroffice.com Microsoft ESMTP MAIL Service ready at Mon, 30 May 2011 23:00:06 +0100
C: EHLO [unknown]
S: 501 5.5.4 Invalid domain name
Error: Unexpected return code 501 (expected 250):
“5.5.4 Invalid domain name”. C: HELO [unknown]
S: 501 5.5.4 Invalid domain name
Error: Unexpected return code 501 (expected 250):
“5.5.4 Invalid domain name”.

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