I'm attemtpint to use the host outbound.mailhop.org which is a service that the dynamic dns folks at dyndns.org have set up.
Under "Use Smarthost" in the SMTP proxy I've set up the three fields:
Address or Hostname: outbound.mailhop.org
Username (optional):
Password (optional):
Now I'm getting thousands of failures on what appears to be incoming mail. Here are two samples from the logs:
This one shows what looks like an incompatibility between Sender Verify and the Smarthost functionality which causes a complete denial of service effect for my mail servers.
2005:04:02-06:38:16 (none) exim[29658]: 2005-04-02 06:38:16 H=lists-outbound.sourceforge.net [66.35.250.225] sender verify fail for : response to "RCPT TO:" from outbound.mailhop.org [63.208.196.171] was: 550 You must authenticate to use MailHop Outbound
2005:04:02-06:38:16 (none) exim[29658]: 2005-04-02 06:38:16 H=lists-outbound.sourceforge.net [66.35.250.225] F= rejected RCPT : Sender verify failed
2005:04:02-06:39:23 (none) exim[29661]: 2005-04-02 06:39:23 Start queue run: pid=29661
This is a log showing basic sender verify failing:
2005:04:02-07:06:01 (none) exim[29954]: 2005-04-02 07:06:01 H=lists-outbound.sourceforge.net [66.35.250.225] sender verify fail for
2005:04:02-07:06:01 (none) exim[29954]: 2005-04-02 07:06:01 H=lists-outbound.sourceforge.net [66.35.250.225] F= rejected RCPT : Sender verify failed
2005:04:02-07:06:31 (none) exim[29957]: 2005-04-02 07:06:31 H=lists-outbound.sourceforge.net [66.35.250.225] sender verify fail for
2005:04:02-07:06:31 (none) exim[29957]: 2005-04-02 07:06:31 H=lists-outbound.sourceforge.net [66.35.250.225] F= rejected RCPT : Sender verify failed
2005:04:02-07:19:23 (none) exim[30062]: 2005-04-02 07:19:23 Start queue run: pid=30062
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