Hello Sophos Community,
I am currently experiencing issues when accessing certain external imap servers through my Sophos XG.
I have several different imap accounts configured on my clients (7 accounts) but only 5 of them work through my Sophos without any problem.
When accessing two of them there's an error saying: SSL handshake timeout - all others work without any problem. All accounts work when using another network (e.g. mobile network or a friend's wifi) So this shouldn't be a configuration issue.
I have proxy, webfiltering and imap scanning enabled, so I created a FW rule allowing a test client to access any/any, put it on top, disabled webfiltering, created a webfilter exception (just to be sure) but there are still these handshake timeouts.
This is everything I get, when trying to check my mails: (unfortunately nothing else in the log files, so far)
Any advice would be appreciated
I am running a Sophos XG 18.0.1 MR-1
yes I am aware that these entries have nothng to do with email and I know what these "invalid traffic" messages mean in this case - but these are the only messages I receive and they're immediately…
there is a bug in the current version of iMAP when using scanning. The bug is reportedly fixed in v18.0.3 MR-3
Many people are waiting for the release of MR-3.Ian
yes, I read about that. I am not sure whether this will resolve my issue as I created an exception and disabled filtering so far. And AFAIK there should be entries in the warren.log when IMAP/SMTP scanning is used but there are no entries when trying to connect via IMAP to these accounts.
But yes, I am also looking forward to the release of MR3.
Please review the tls log. The error messages you have posted have nothing to do with email, they are from a sessions that have ended and handshake has not completed in time.
yes I am aware that these entries have nothng to do with email and I know what these "invalid traffic" messages mean in this case - but these are the only messages I receive and they're immediately displayed when checking for mail via IMAPS (TCP 993) So this is at least somehow connected to the issue/traffic. Unfortunately I do not have any other message or logs - not even in the TLS logs (SSL/TLS inspection is not enabled). This is why I created this thread.
There's nothing in the TLS logs.