Reputation
303
Top tag
Next privilege 500 Rep.
Access review queues
Badges
1 6 20
Impact
~45k people reached

  • 0 posts edited
  • 0 helpful flags
  • 36 votes cast
Jul
9
comment Fixing invalid DNS records for mail server with SSL certificate
@SteffenUllrich Ah right. SPF records look interesting, I'll look into that, thanks.
Jul
9
comment Fixing invalid DNS records for mail server with SSL certificate
I think I might be misunderstanding what's required here. When I looked up Google's mail server, the PTR record for the IP address that it points to does not match the name in the MX record, nor the name that the server provides when connected to over SMTP. Is this not what you are referring to?
Jul
8
comment Fixing invalid DNS records for mail server with SSL certificate
As mentioned in my comment above, I'd prefer not to update my PTR record as such as mail.example.com is "the canonical name" for the IP address. Furthermore, none of Apple, Google, Microsoft, or StackOverflow have such a PTR record so I don't think it will be a problem.
Jul
8
accepted Fixing invalid DNS records for mail server with SSL certificate
Jul
8
comment Fixing invalid DNS records for mail server with SSL certificate
In theory yes, but the PTR record is supposed to be "the canonical name" for the IP address, and in my case foo.example.com is the canonical address.
Jul
8
comment Fixing invalid DNS records for mail server with SSL certificate
At this point I'm not convinced it is necessary. I did a quick look at Apple, Google and Microsoft's DNS records and none of their PTR records matched the A records for their mail servers so I think I'm fine with not changing mine. If you'd like to put your first comment as an answer I'll gladly accept it.
Jul
8
comment Fixing invalid DNS records for mail server with SSL certificate
Mmm, that's potentially a problem as the machine is primarily foo.example.com and it wouldn't make logical sense for it's PTR record to say mail.example.com. Is it documented anywhere that this is a requirement?
Jul
8
comment Fixing invalid DNS records for mail server with SSL certificate
Ah right. I didn't think of that, that should be fairly straightforward. Would it matter that the reverse DNS record would not match?
Jul
8
revised Fixing invalid DNS records for mail server with SSL certificate
added 46 characters in body
Jul
8
asked Fixing invalid DNS records for mail server with SSL certificate
Jun
25
awarded  Popular Question
Jun
8
accepted Redirect to Python script in .htaccess while maintaining request URL
Jun
7
answered Redirect to Python script in .htaccess while maintaining request URL
Jun
6
asked Redirect to Python script in .htaccess while maintaining request URL
Feb
26
awarded  Popular Question
Feb
10
awarded  Popular Question
Feb
3
awarded  Popular Question
Jan
27
comment Creating missing Maildir++ folders in Dovecot
Uh, there are a lot of config files and most of it probably isn't relevant; were there any particular directives you were interested in? Yes, the folder icons are probably grey. I think this is a more of a Maildir thing than Dovecot.
Jan
23
comment Creating missing Maildir++ folders in Dovecot
2.1.7 I think, mail_location = maildir:/var/mail/%u, files are 600 and directories are drwx--S---, all owned by vmail:vmail, although I have root privileges so that's not a problem.
Jan
19
revised Creating missing Maildir++ folders in Dovecot
added 21 characters in body