All Questions
62
questions
0
votes
1
answer
286
views
POSTFIX - sending mails. My mails sent outside bounce back
main.cf
compatibility_level = 2
command_directory = /usr/sbin
daemon_directory = /usr/lib/postfix/sbin
data_directory = /var/lib/postfix
mail_owner = postfix
myhostname = mail.aufy.pl
mydomain = aufy....
- 13
1
vote
1
answer
1k
views
Email proxy architecture
I'm trying to figure out how email proxies generally work. I want to present the way I see the architecture, would be glad if anyone could explain which of my assumptions is flawed and what am I ...
- 143
0
votes
1
answer
292
views
How to submission server of an email (SMTP)? [closed]
I will brief you about the situation I'm in, what issue I am facing and what I have tried.
I have set up a web app using flask, where users can send automated emails (not email campaigns) to a list of ...
0
votes
1
answer
177
views
Debian 10 MX hostname issue
I am facing an issue where every single site like intodns, dnsstuff, mx toolbox is reporting that i have 2 issues.
Namely:
Reverse DNS does not contain the hostname
Reverse DNS does not match SMTP ...
0
votes
1
answer
1k
views
Setting up an MX record for a send-only server
I have set up a send-only server and I have tested it using mail-tester.com.
I get a 7/10, and I experience a majority of outlook/msn/hotmail inboxes sending my email to the junk folder. I do know ...
- 45
0
votes
1
answer
71
views
Domain & IP pair reputation
Recognition a pair a of domain & IP with positive history builds reputation in the eyes of many ISPs. But how does this relation looks like? How important is Domain rep vs IP rep? Can I use many ...
- 1
0
votes
0
answers
415
views
Email server not working with external emails (like Google, Yahoo)
I have setup Modoboa server in Ubuntu system (static IP) using this link.
Internal emails are working ([email protected] to [email protected]), but an email from an external provider like ...
1
vote
1
answer
1k
views
How to connect to mail.hotmail.com via port 25 from DNS as instructed by Outlook
If you read https://sendersupport.olc.protection.outlook.com/pm/troubleshooting.aspx, it says
Confirm that your DNS is set up correctly
Try connecting to mail.hotmail.com via port 25. If you are ...
- 63
0
votes
3
answers
2k
views
How to set MX record so that delivery results in temporary failure
I am moving an SMTP server from a host to another. In order to make things as simple as possible for me (and since I don't care if email are delayed a few hours), I would like to adopt this strategy:
...
0
votes
1
answer
501
views
Unrouteable Address with Office365
Before we get into the question, here's some context that I believe would help y'all to understand my situation better:
My domain (foo.com), is owned by Network Solutions (NS), same for the DNS ...
0
votes
1
answer
1k
views
How to enable SMTP on Windows Server 2016?
I recently purchased VPS service to allow me to host a site. My mail provider is zoho.com. In order to get it to work, I would need to add 3 entries under Mail Exchange records (MX Record) as the ...
- 171
1
vote
0
answers
87
views
Postfix 3.2.0 - Sending to all MX records
Firstly, apologies if I haven't included all of the relevant information in this initial post. Please let me know if I have missed anything.
I am currently running Postfix 3.2.0 and have a problem ...
- 11
1
vote
1
answer
187
views
Behavior of MTAs given CNAME subdomain
I've got a requirement to provide subdomain-specific MX records while serving HTTP traffic at customer.oldandbusted.com, something like this:
customer1.oldandbusted.com. IN A 192.168.0.1
...
- 11
1
vote
1
answer
220
views
3 SMTP servers on different ip's to one failover ip, is this possible?
Situation:
We have 3 separate SMTP servers on 3 unique public static ip addresses [rovided by ISP. We have a new mobile 4g connection with a single static public ip as a possible failover connection.
...
1
vote
1
answer
1k
views
Can my MX record and SMTP relay host differ?
I have set up SMTP relay using postfix on number of VPS instances we manage. Relay is used for sending errors and reports (duplicity, httpok, zope, crons ...) from services on those VPSs. They are ...
- 13