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Mail delivery problems to valid email addresses
I had the same error from earthlink (see below) There was a SMTP communication problem with the recipient's email server. Please contact your system administrator. <myserver.com #5.5.0 smtp;550-EarthLink does not recognize your computer (x.x.x.x) as connecting from an EarthLink connection...- KomodoDragon
- Post #12
- Forum: Microsoft: Exchange
