Hi, I am a Linux admin have 6 years of experience in this field.
I can help you to check SMTP server
I worked in webhosting industry and manage datacenter from remote. I give full server management support and I can do this for you . I also have experience working on vps complex setup. I worked in the following areas. cPanel/WHM Plesk
*vps complex setup
* Webmin
* Website Panel
* Website migrations
* Installation and configurations of applications like Wordpress, Joomla, magento, etc
* Email server configuration and maintenance * FTP and DNS service configurations
* Amazon web services like, EC2, S3, Route 53, VPC, RDS.
* Migration Specialist
*Postfix Mailserver with spf, dkim and IP rotation.
*Nagios Monitoring setup
*PCI Compliance
*FFMPEG server setup
*Imagemagick install.
*MySQL , MariaDB database administration *DNS server and nameserver configuration *SSL installation/Lets Encrypt
* Install OpenVPn Server.
Please give me a chance to work with you. I am sure that you will be 100% satisfied
Thanks