Mail disappearing from POP host not arriving at SBS2003 Exchange
Posted on 2011-10-25
Hello fellow experts,
Starting this past week, one of the mail boxes seems to have something wrong. Client reports that they are not receiving all their mail. Mail is being delivered to the POP on the host, but it disappears every two (2) minutes. We can watch the mail arrive on webmail, but then it disappears.
Outside mail is being delivered to a web host running SmarterMail.
Small Business Server 2003 w/Exchange accesses POP Host via POP3 Connector. All users have SmarterMail accounts on the host. The MS SBS 2003 Exchange connects to the Host (mail.domain.com) via the Pop3 connector (POP3 Connector is set to 15 minute intervals.). Each user has an account on the SBS2003, as well, and mail from POP is directed to the appropriate user’s box in Exchange. This configuration has work without issue for years.
I have removed the POP3 Connector entry for the problem user/account on SBS2033, but the mail is still being removed from the POP at the host. Believing that the problem is with Exchange, I have restarted the local SBS machine. While SBS is off, deletion of mail from the POP host stops, as expected. Mail accumulates, and stays until the SBS restarts, at which time the mail is removed and disappears. 5 other mail boxes on the POP host and ExchangeSBS are all working fine. No problems at all.
I have deleted and recreated the mail box on the POP host, no luck. I have added additional SMTP records in the Exchange SBS as per one other tech note here. No luck. Mail is still being deleted every two minutes.
Any help would be appreciated, this is quite vexing.