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2
votes
2answers
94 views

postfix rewriting sender with generic & header_check

I want to rewrite all sender addresses @example.com to newsender@example.org (to one static outgoing address) but I also want to have the original address added as the reply-to. I can do either ...
0
votes
0answers
12 views

Sending email from Exchange & Notes

We have a domain, contoso.com, which is running under Lotus Domino 9. Under said domain we have accounts like alexander@contoso.com or info@contoso.com, and we can send and receive eMail with Lotus ...
2
votes
1answer
300 views

postfix change to address based on sending host

We have one central postfix mailserver and some more application servers behind whereas those servers relaying the mails trough the central mailserver. now i want to configure the central one to ...
1
vote
1answer
487 views

Postfix rewrite sender: why doesn't this work

I have server A with an IP address only and a dummy FQDN (on the basis all machines should have a FQDN): pants.net.invalid. All mail is relayed through another server elsewhere, which works fine. ...
2
votes
1answer
73 views

Understanding the many “FROM” addresses that apply to SenderID, DKIM, and SPF

Can someone tell me when and why a client, MTA relay, Unix .Forward, anonymous relay, or listserver will create, or alter these headers: Resent-Sender: Resent-From: Sender: From: If you can please ...
2
votes
0answers
900 views

Rewriting sender address based on the recipient

I'm trying to set up my postfix server to alter the sender address of outgoing e-mails for one specific recipient domain (example.com) -- otherwise I'd just configure smtp_generic_maps in main.cf and ...
2
votes
2answers
3k views

Forward Mails to Gmail

I have a postfix mailserver running. Mails sent from users to Gmail are showing up in Gmail, so it works in general. Same for all other freemail hosts I know. The problem is that some users have no ...
0
votes
2answers
1k views

What does SMTP 'designate' term mean?

I received a gmail from the address of a friend who is long out of contact. It is possible to use a utility/service such as mail2web.com to define a sender email that differs from the true sender ...
1
vote
1answer
510 views

Forcing a sender name on outgoing mail

I'm attempting to implement a consistent standard across my company's email accounts as the business grows and we also become involved with other market sectors (for which we have alternative accounts ...
0
votes
3answers
382 views

Is there a way to set up an SMTP relay that allows users of a web app to have the web app send emails with their own email address as senders?

the web service sends out emails on behalf of the users to their customers. So john@domainA.com uses webservice and webservice sends emails . The emails should be appearing as coming from ...
8
votes
4answers
5k views

SRS / Sender Rewriting when forwarding mail through postfix

Is there any way to perform SRS, or something similar using Postfix? When I get a mail from user@example.org, I forward it (via a catchall) to something@gmail.com, but GMail is checking SPF, and ...