Dear AT&T Internet Services Member,
We have received questions regarding the following error message which is received by customers when they send e-mail using a non-verified e-mail address:
“Unable to send the message. Please verify the e-mail address in your account properties. The server responded: 553 From: address not verified.”
Ah, it requires that the sender's address to be verified. The hostname of my FreeBSD server is not in public DNS server so it can't really receive emails so there is no way to verify the email address. Fortunately, Sendmail allows you to masquerade sender's address easily. You just need to add the following three lines into your sendmail.mc (Don't forget to apply the patch to the result sendmail.cf if you want to use sendmail with stunnel on localhost, as described in my last post)
FEATURE(masquerade_envelope)
FEATURE(genericstable, `hash -o /etc/mail/genericstable')
GENERICS_DOMAIN(your_domain_name)
Replace your_domain_name with the email domain that your Unix server uses. Then you need to modify /etc/mail/genericstable file. The syntax is pretty simple:
user1 verified_address
The verified_address doesn't have to be from yahoo.com. Any email address that you own and verified with Yahoo will do. The genericstable file basically says that for those users at the generic domains (defined by GENERICS_DOMAIN) the sender address should be replaced with the verified_address. Make a hash out of the new genericstable file,
makemap hash genericstable.db < genericstable
Now restart sendmail and you are all set.
4 comments:
Hello, I've tried this process and I'm getting the following in /var/log/maillog. Any help would be greatly appreciated...
Oct 23 14:17:47 blue sendmail[5341]: m9NIHlEn005340: to=mstarling@epathlearning.com, ctladdr=root@blue.maizenblue.com (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30569, relay=[127.0.0.1] [127.0.0.1], dsn=5.0.0, stat=Service unavailable
Oct 23 14:17:47 blue sendmail[5341]: m9NIHlEn005340: alias root@blue.maizenblue.com => mstarling@epathlearning.com
Oct 23 14:17:47 blue sendmail[5341]: m9NIHlEn005340: m9NIHlEn005341: DSN: Service unavailable
Oct 23 14:17:47 blue sendmail[5341]: m9NIHlEn005341: to=mstarling@epathlearning.com, delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=31593, relay=[127.0.0.1], dsn=4.0.0, stat=Deferred: Connection reset by [127.0.0.1]
Oct 23 14:17:47 blue sendmail[5341]: m9NIHlEn005340: done; delay=00:00:00, ntries=1
You doesn't seem to have stunnel running on the localhost correctly.
If Aol Mail is not showing images to mail recipients then to get that fixed, it is advisable to open the mail settings and from there the user will have to get HTML enabled, if needed then for further information the user should get connected with the certified Aol UK Helpline Toll Free Service experts. The lines are open for users all the time.
This is great information...
Thanks for Sharing...
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