I have an interesting situation that has occurred literally over night which I am unable to resolve. We regularly run Email campaigns using MailJet and MailGun via the connectors in X2CRM. On monday we were able to send a campaign and it worked great. The API Username nad Passowrd combination were left unchanged. On Tuesday we went to send another campaign but were unable too. The campaign would just pause during sending emails.
When we examined the mailjet connector credentials within the Manage Apps section, we noticed that Password credentials were empty. We tried to add the missing password, and validate credentials, however it kept returning the Failed to authenticate! Please check your credentials.
We have attempted to send emails using the API credentials via the terminal and this works no problem.
We have checked to ensure all Firewall ports etc have not changed , and all is in order.
We are at a loss to know what to do next. We can't understand how it worked perfectly the day before, but failed the following day with no environment changes at all. Could you provide us with any other pointers as to what we can check?