Archive for the ‘Uncategorized’ Category

When moving mailboxes to Exchange Online. The remote server returned an error: (503) Server Unavailable… mrsproxy.svc is unavailable, service is too busy or no endpoint.

I spent many hours troubleshooting and opening several support tickets with Microsoft, but in the end, I was able to fix the problem on my own. I believe it would be helpful for others to share my documentation of these procedures. The help from Microsoft O365 support was quite disappointing. They seemed to repeatedly ask the […]

Juniper SRX Stuck in loader prompt

Insert a USB on a working SRX, then copy the partition Insert the USB on the broken SRX and boot from USB loader> nextbootPlatform: srx-tridenteUSBusbloader> nextboot usbSetting next boot dev usbloader> rebootResetting… To do so, use the command below: request system snapshot media internal slice alternateThe slice seems to be a hidden command; therefore, you would […]

Email Headers:

Check like the forensic investigator. Email headers contain important information about the origin and path an email took before arriving at its final destination, including the sender’s IP address, internet service provider, email client, and even location. The information could be used to block future emails from the sender (in the case of spam) or […]

Office365 SMTP

Office 365 SMTP server settings Server: Alternative server: Port: 587 Encryption: TSL Authentication: Yes – use your full username and password. Note: Sending emails also works if TCP 25 is set as a port in connection settings, but using TCP 587 is recommended. Office 365 POP3 settings Server: Port: 995 Encryption: TSL Authentication: Yes – use your full username and password. Office 365 IMAP […]