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by FDGWeb
10 Aug 2016, 17:33
Forum: General Discussion (csf)
Topic: CSF Blocking SMTP to Sendgrid
Replies: 7
Views: 4463

This is still occurring for us. CSF is blocking the TCP request after a short while... dropping the connection to Sendgrid. We're working with our techs on this .. but it is definitely CSF. When we restar the firewall (CSF) it work again for hours to days before being blocked again. It is blocking i...
by FDGWeb
03 Aug 2016, 22:59
Forum: General Discussion (csf)
Topic: CSF Blocking SMTP mail when its not configured to do so
Replies: 28
Views: 5068

Here's an Exim_log when it happens: 2016-08-03 17:45:28 SMTP connection from [IP ADDRESS]:40062 (TCP/IP connection count = 2) 2016-08-03 17:45:28 SMTP connection from [IP ADDRESS]:40064 (TCP/IP connection count = 3) 2016-08-03 17:45:28 SMTP connection from serverhost [IP ADDRESS]:40062 lost 2016-08-...
by FDGWeb
26 Jul 2016, 01:25
Forum: General Discussion (csf)
Topic: CSF Blocking SMTP mail when its not configured to do so
Replies: 28
Views: 5068

We have the exact same problem. We're using Sendgrid to send SMTP email - it works fine, then CSF blocks it from sending email. There's nothing specific in the mail logs. None of the IPs internal or external for Sendgrid seem to be blocked. When CSF is restarted .. everything works from anywhere bet...
Search found 3 matches Page 1 of 1