Whilst carrying out some routine diagnostic work for our Microsoft Windows 2012 server running Exchange 2010, I was running MXTOOLBOX.com which produced the following results :-
SMTP Reverse DNS Mismatch
Warning - Reverse DNS does not match SMTP Banner
SMTP Transaction Time
8.315 seconds - Not good! on Transaction Time
SMTP Banner Check
OK - xxx.30.36.xx resolves to autodiscover.domainname.co.uk
OK - Supports TLS.
SMTP Connection Time
0.905 seconds - Good on Connection time
I am a little confused about what our reverse DNS should point to??
Our smtp mail service is configured as mail.domainname.co.uk
We also have an A host record pointing to autodiscover.domainname.co.uk
The SMTP banner is reorted by MXTOOLBOX as being autodiscover.domainname.co.uk
Do I get our host to set our reverse DNS to resolve to mail.domainname.co.uk ie our standard smtp or do I need it set to autodiscover.domainname.co.uk which is what the MXTOOLBOX.COM says our SMTP banner resolves to??
Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.
To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it.
The vast majority of email clients display l…