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Spam filter not working, incoming e-mails not in SMTP log

0xDECAFBAD

I'm not sure when, but a couple-ish weeks ago I noticed a lot of spam e-mails coming in. I checked the SMTP logs and I don't see any incoming e-mails being logged even though the UTM seems to be relaying them to the internal e-mail server. I see random connections from addresses such as:

019:06:14-09:50:56 utm exim-in[5528]: 2019-06-14 09:50:56 SMTP connection from [107.170.202.224]:34776 (TCP/IP connection count = 1) 2019:06:14-09:51:00 utm exim-out[25083]: 2019-06-14 09:51:00 Start queue run: pid=25083 2019:06:14-09:51:00 utm exim-out[25083]: 2019-06-14 09:51:00 End queue run: pid=25083 2019:06:14-09:51:06 utm exim-in[25079]: 2019-06-14 09:51:06 TLS error on connection from [107.170.202.224]:34776 (SSL_accept): error:00000000:lib(0):func(0):reason(0) 2019:06:14-09:51:06 utm exim-in[25079]: 2019-06-14 09:51:06 TLS client disconnected cleanly (rejected our certificate?)

And I see outgoing e-mails being relayed but incoming e-mails aren't showing up in the log. Any ideas why this would be?



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  • 0 in reply to 0xDECAFBAD

    The product works quite predictably, but I cannot comment on your problem from limited information, some of which sounds impossible.

      You need to spend a lot of time studying the manuals, the supplemental information in the WiKi and pinned to the top of each forum section, and reviewing the system logs.   Firewalls are critically important to get right on tbe first try, so your best move may be to find a consultant or a mentor.

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