We have a ISP (Optonline) and our mail is stuck in the outbound queue. When I change the connector's property to "Use DNS to route to each address space on the connector" the mail goes out. Subseqent e-mails get stuck in the outbound queue and the additional queue information says "The remote server did not respond to a connection attempt." We get the same message even if we send mail to an AOL email address.
The ISP is for the site is Dynamic. The only way the mail leaves the Queue is if I change the connector to a smart hub and give it the Optonline user id and password (which works for webmail) but i then get an authentication error. When I change it back to DNS the mail goes but often it does not arrive. I have tried both port 25 and 587.
both I and a Colleague worked on this all day and have not been able to figure this out. Any help would really be appreiciated.
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