RE: Which mail server?
> In article <5Jy4y-3nLfirstname.lastname@example.org>, Serhan D. KIYMAZ wrote:
>> Is qmail is good enough or do I have to choose postfix or exim? Which
>> one and why?
> Qmail's got two problems that were enough for me to replace it.
> 1. It doesn't know how to reject anything in the SMTP cycle.
> It swallows everything and then barfs up the crap.
> Generates a lot of backscatter. So much that you can get
> blocked by AOL if some spammer spoofs them a lot.
Validrcptto patch, www.usenix.org.uk/qmail/ has scripts for that.
> 2. It doesn't know how to bunch together multiple recipients
> of the same message in the same domain.
> So if you have 500 Yahoo subscribers on a mailing list, it
> takes 500 separate processes and SMTP transactions to deliver
> them. Yahoo will block you for that.
> Postfix will collect them together and do one SMTP transaction.
Most MTAs limit the number of rcpttos, I'd rather deliver mail in single
sessions than have one full mailbox block it, that sort of behaviour