Avast blocks your communication to Gmail server (port 993 imaps)

After investigating on a very strange behavior of our App we found a solution to a very common problem comes from Avast!: This antivirus blocks every connection to the Gmail server over imaps (port 993).

Every users that use Avast! has to add an exception in their “Email protection” system.

Open the Avast Preferences and click on Advanced for the Email protection:


Then click on Exception and add your Exception clicking on the little plus (+):


You have to add an exception for:

Server: imap.gmail.com
Service: imaps

Now our App can freely communicate to the Gmail server.

Other antivirus (check the Error in the logs)

At the moment we don’t know but maybe you could have the same error with others antivirus. You can see the strange behavior of our App in the logs (after enabling the logs in the Preferences):

12/05/14 11:00 Check for new Emails in '[Gmail]/Tutti i messaggi'
12/05/14 11:00 processBatch: 351 messages in batch
12/05/14 11:00 messagesFullFrom: NIL - ERROR: Error Domain=mailcore Code=5 "Parse error" UserInfo=0x7ff3e5e01fe0 {NSLocalizedDescription=Parse error}
12/05/14 11:00 End Fetch messages (100 / 351)
12/05/14 11:00 Lost connection to server ... aborting backup

The “Parse error” on the “Check for new Emails” procedure means that something is blocking this procedure!

Un pensiero su “Avast blocks your communication to Gmail server (port 993 imaps)

  1. I do believe all of the ideas you’ve offered for your post. They are really convincing and will definitely work. Still, the posts are very quick for newbies. May just you please extend them a little from next time? Thank you for the post. eegcadfkeeac

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