All Questions
89
questions
0
votes
1
answer
60
views
SMTP - How to send mail as @example.com when example.com cannot be used as source server/IP
I have run into a bit of an issue when attempting to set up a mail system where the parent domain, example.com, already has A records and a web server as well as many clients utilizing the parent ...
- 1
0
votes
2
answers
2k
views
SMTP Relay - Keep sender SPF valid
We use a email setup (incoming mails) in the following order:
Internet -> on premises mailserver (=> attachment filter, antivirus, spam filter) -> forward to Microsoft 365 Exchange Online ...
0
votes
2
answers
427
views
Root domain in SPF record instead of full hostname
Can i use root domain like google.com instead of _spf.google.com in SPF record?.
My SPF record
v=spf1 include:_spf.mx.cloudflare.net include:_spf.google.com include:mxsmtp.sendpulse.com +a +mx ~all
...
1
vote
1
answer
367
views
I setup DMARC p=reject on server but now I can't send via gmail to gmail (using server email From address)
Did I shoot myself in the foot ?
I mainly use gmail to send and receive emails. Support etc. My default 'send email as' profile is not the gmail address itself but an address on my server (also the ...
- 113
0
votes
0
answers
466
views
configure iis6 smtp server to send from a specific IP
We have a dedicated Windows 2016 server that hosts multiple websites. Each site uses the IIS6 SMTP server to send emails from the websites (enquiries, order confirmations, etc.) - each site has a ...
- 1
1
vote
1
answer
903
views
How to replace "via amazonses.com" with my apps branding "via example.com" for the email identities in AWS SES?
So in SES - there are two ways to verify identities as I can see:
Email identities
Domain identities
With domain identiies - it is easier to fix the "signed-by" and "mailed-by" ...
- 135
1
vote
1
answer
2k
views
postfix: how to force IPv4 through SMTP?
Problem
I have successfully set up a Postfix mailserver with an SMTP interface, set up DKIM, DMARC, SPF, all that stuff.
But I had a problem when testing the delivery of emails to Gmail.
Namely, SPF ...
- 137
0
votes
1
answer
1k
views
Compared to SPF MAIL FROM checks, what are HELO checks good for? [duplicate]
I’m starting with SPF on my (email) domain. (No DKIM or DMARC yet.)
I see little usefulness in HELO identity checking in SPF and am thinking about setting the HELO identity to my domain (instead of ...
- 551
0
votes
1
answer
1k
views
Setup DNS records for SMTP send-only server
I have website on hosting with domain exmpl.com.
I have DNS record for exmpl.com:
exmpl.com MX(10) mail.exmpl.com
mail.exmpl.com A XX.XX.XX.XX
exmpl.com TXT v=spf1 +a +mx +a:hosting.server ~all
All ...
3
votes
1
answer
2k
views
Custom Return-Path for gmail domain
I do not expect my problem to be super-unique, but I was not able to find and answer so far even at Gmail help pages, and lots of googling with various terms did not provided a solution.
Context:
...
- 135
0
votes
1
answer
371
views
How to stop spammer spoofing my domain for emails
I've scanned all my code and even changed the passwords to my google apps account such that the SMTP password has changed. However, spammers are still sending emails from June24-eBay-USA-contactmsg-...
- 302
-1
votes
1
answer
4k
views
Unable to send email to gmail account from my mail server
I've created a mail server and have setup a PTR record from the ISP to my static IP server. The mail server works well and am able to send and receive emails and send mails to many email addresses ...
- 109
11
votes
2
answers
48k
views
How do I prevent the SPF_HELO_NONE warning when sending from Postfix?
When using a tool like https://dkimvalidator.com/ to verify configuration of DKIM, SPF, DMARC, etc. for sending mail from a web server, I get a warning like this:
0.0 SPF_HELO_NONE SPF: HELO does not ...
- 459
1
vote
2
answers
2k
views
DNS MX record and SMTP server
I have a SMTP server. DKIM is setup and working and have also setup SPF.
The SMTP host is smtp.domain.com
On the DNS I have a A record with smtp pointing to the IPv4 and a AAAA record with smtp ...
- 2,095
0
votes
1
answer
2k
views
SPF SOFTFAIL domain of transitioning [email protected] does not designate X.X.X.X as permitted sender)
in my company I have the following error.
softfail (google.com: domain of transitioning [email protected] does not designate X.X.X.X as permitted sender) client-ip=X.X.X.X;
Let's say my mail....
- 133