05-04-2021 07:38 AM
Hello,
We've got 2 Cisco Ironport C100V in cluster mode.
Now we have some trouble with a mailing to 1 subcontractor.
We can recieve mails but when we want to send a mail there a problem.
In the message tracking you see the following.
messagetooold, Email Security
When i open some other message trackings i see some of them with the normal date and some of them with also 2017 in the first rules.
There are no problems with this mails.
What can i check or verify?
05-04-2021 09:17 AM
There is some kind of an issue with the connectivity to the remote server.
ESA acted as per default configuration and tried to deliver the email for 3 days before give up and generate a hard bounce message to the sender.
You can search in the mail logs for connection errors to this server or recipient domain:
grep "Apr 30.*Connection Error.*domain\\.nl" mail_logs
grep "Apr 30.*Connection Error.*recipient'sIP" mail_logs
Might also be a TLS related error, may want to check what are your TLS settings for outgoing traffic and check what the remote server is supporting. A packet capture to this same remote server may also be handy.
05-04-2021 10:48 AM - edited 05-04-2021 10:50 AM
About your other query - you can ignore the older data from previous years - this happens on ESAs with relatively high traffic when the counters for ICID in your case got flipped and starts counting again. In your case it seems like it takes ~4 years to flip the counter.
05-06-2021 01:06 AM
Hello,
Thanks for the reply. I checked the logs and saw the following:
10:45:51 2021 Info: Connection Error: DCID 1143081 domain: DOMAIN.nl IP: xx.5.xx.111 port: 25 details: [Errno 61] Connection refused interface: 10.20.132.25 reason: network error
Today i heard all the messaged send were deliverd. There was no change on our or their side. So the problem is gone but still a wierd thing.
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